class="tags" href="/tags/C.html" title=
c >
c ontent_views"
c lass="tags" href="/tags/C.html" title=
c >
c lass="markdown_views prism-tomorrow-night">
class="tags" href="/tags/C.html" title=c >c ap="round" d="M5,0 0,2.5 5,5z" id="raphael-marker-bloc lass="tags" href="/tags/C.html" title=c >c k" style="-webkit-tap-highlight-c lass="tags" href="/tags/C.html" title=c >c olor: rgba(0, 0, 0, 0);">
c >c ="https://i-blog.c lass="tags" href="/tags/C.html" title=c >c sdnimg.c lass="tags" href="/tags/C.html" title=c >c n/direc lass="tags" href="/tags/C.html" title=c >c t/c lass="tags" href="/tags/C.html" title=c >c b7f73c lass="tags" href="/tags/C.html" title=c >c da1a14130840e356c lass="tags" href="/tags/C.html" title=c >c b0b6f9e4.png#pic lass="tags" href="/tags/C.html" title=c >c _c lass="tags" href="/tags/C.html" title=c >c enter" alt="在这里插入图片描述" width="100" />
<
c lass="tags" href="/tags/C.html" title=
c >
c enter>
博客主页： [小ᶻ☡꙳ᵃⁱᵍᶜ꙳]
class="tags" href="/tags/C.html" title=
c >
c enter>
<
c lass="tags" href="/tags/C.html" title=
c >
c enter>
本文专栏: C++
class="tags" href="/tags/C.html" title=
c >
c enter>
c >c ="https://img-blog.c lass="tags" href="/tags/C.html" title=c >c sdnimg.c lass="tags" href="/tags/C.html" title=c >c n/direc lass="tags" href="/tags/C.html" title=c >c t/00d4fdeb7b0d4dbb99e88f325ef249d8.gif#pic lass="tags" href="/tags/C.html" title=c >c _c lass="tags" href="/tags/C.html" title=c >c enter" alt="在这里插入图片描述" width="1000" height="100" />
在本次讨论中c lass="tags" href="/tags/C.html" title=c >c ;我们围绕一个典型的编程问题展开：给定一行输入的单词序列c lass="tags" href="/tags/C.html" title=c >c ;要求计算并输出每个单词的长度c lass="tags" href="/tags/C.html" title=c >c ;单词之间以逗号隔开。这类问题是编程初学者经常遇到的题目c lass="tags" href="/tags/C.html" title=c >c ;能够帮助我们理解如何处理字符串、分割单词以及格式化输出。本文将深入分析几种不同的解法c lass="tags" href="/tags/C.html" title=c >c ;并比较它们的优缺点c lass="tags" href="/tags/C.html" title=c >c ;进一步提出优化建议。c >c ="https://i-blog.c lass="tags" href="/tags/C.html" title=c >c sdnimg.c lass="tags" href="/tags/C.html" title=c >c n/direc lass="tags" href="/tags/C.html" title=c >c t/f0db7c lass="tags" href="/tags/C.html" title=c >c 348331440fa266b3c lass="tags" href="/tags/C.html" title=c >c 24f558694.png#pic lass="tags" href="/tags/C.html" title=c >c _c lass="tags" href="/tags/C.html" title=c >c enter" alt="在这里插入图片描述" /> B2120 单词的长度c >c ="https://i-blog.c lass="tags" href="/tags/C.html" title=c >c sdnimg.c lass="tags" href="/tags/C.html" title=c >c n/direc lass="tags" href="/tags/C.html" title=c >c t/9ee6ec lass="tags" href="/tags/C.html" title=c >c 01a34b4de48e4207f120f16c lass="tags" href="/tags/C.html" title=c >c d8.png" alt="在这里插入图片描述" />
题目：输入一行单词序列c lass="tags" href="/tags/C.html" title=c >c ;相邻单词之间由1个或多个空格间隔c lass="tags" href="/tags/C.html" title=c >c ;请对应地计算各个单词的长度。
注意：
如果有标点符号（如连字符c lass="tags" href="/tags/C.html" title=c >c ;逗号）c lass="tags" href="/tags/C.html" title=c >c ;标点符号算作与之相连的词的一部分。 没有被空格间开的符号串c lass="tags" href="/tags/C.html" title=c >c ;都算作单词。 输入格式：
一行单词序列c lass="tags" href="/tags/C.html" title=c >c ;最少1个单词c lass="tags" href="/tags/C.html" title=c >c ;最多300个单词c lass="tags" href="/tags/C.html" title=c >c ;单词之间用至少1个空格间隔。 单词序列总长度不超过1000。 输出格式：
依次输出对应单词的长度c lass="tags" href="/tags/C.html" title=c >c ;之间以逗号间隔。 示例：
输入：
<c lass="tags" href="/tags/C.html" title=c >c ode>She was born in 1990-01-02 and from Beijing c lass="tags" href="/tags/C.html" title=c >c ity.
class="tags" href="/tags/C.html" title=c >c ode>
输出：
<c lass="tags" href="/tags/C.html" title=c >c ode>3,3,4,2,10,3,4,7,5
class="tags" href="/tags/C.html" title=c >c ode>
在我开始实现解决方案时c lass="tags" href="/tags/C.html" title=c >c ;首先明确了题目的基本要求——分割单词并计算长度。我的做法是基于字符串流的方式c lass="tags" href="/tags/C.html" title=c >c ;通过逐个读取单词c lass="tags" href="/tags/C.html" title=c >c ;计算每个单词的长度c lass="tags" href="/tags/C.html" title=c >c ;最后格式化输出。
<c lass="tags" href="/tags/C.html" title=c >c ode c lass="tags" href="/tags/C.html" title=c >c lass="prism language-c lass="tags" href="/tags/C.html" title=c >c pp">class="tags" href="/tags/C.html" title=c >c lass="token mac lass="tags" href="/tags/C.html" title=c >c ro property">class="tags" href="/tags/C.html" title=c >c lass="token direc lass="tags" href="/tags/C.html" title=c >c tive-hash"># class="tags" href="/tags/C.html" title=c >c lass="token direc lass="tags" href="/tags/C.html" title=c >c tive keyword">inc lass="tags" href="/tags/C.html" title=c >c lude class="tags" href="/tags/C.html" title=c >c lass="token string"><iostream>
class="tags" href="/tags/C.html" title=c >c lass="token mac lass="tags" href="/tags/C.html" title=c >c ro property">class="tags" href="/tags/C.html" title=c >c lass="token direc lass="tags" href="/tags/C.html" title=c >c tive-hash"># class="tags" href="/tags/C.html" title=c >c lass="token direc lass="tags" href="/tags/C.html" title=c >c tive keyword">inc lass="tags" href="/tags/C.html" title=c >c lude class="tags" href="/tags/C.html" title=c >c lass="token string"><string>
class="tags" href="/tags/C.html" title=c >c lass="token keyword">using class="tags" href="/tags/C.html" title=c >c lass="token keyword">namespac lass="tags" href="/tags/C.html" title=c >c e stdclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token keyword">int class="tags" href="/tags/C.html" title=c >c lass="token func lass="tags" href="/tags/C.html" title=c >c tion">main class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">)
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">{
string sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token func lass="tags" href="/tags/C.html" title=c >c tion">getline class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( c lass="tags" href="/tags/C.html" title=c >c inclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">, sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">) class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token keyword">int i class="tags" href="/tags/C.html" title=c >c lass="token operator">= class="tags" href="/tags/C.html" title=c >c lass="token number">0 class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token keyword">int c lass="tags" href="/tags/C.html" title=c >c ount class="tags" href="/tags/C.html" title=c >c lass="token operator">= class="tags" href="/tags/C.html" title=c >c lass="token number">0 class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token keyword">for class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( i class="tags" href="/tags/C.html" title=c >c lass="token operator">= class="tags" href="/tags/C.html" title=c >c lass="token number">0 class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">; i class="tags" href="/tags/C.html" title=c >c lass="token operator">< sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">. class="tags" href="/tags/C.html" title=c >c lass="token func lass="tags" href="/tags/C.html" title=c >c tion">size class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">) class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">; iclass="tags" href="/tags/C.html" title=c >c lass="token operator">++ class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">)
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">{
class="tags" href="/tags/C.html" title=c >c lass="token keyword">if class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">[ iclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">] class="tags" href="/tags/C.html" title=c >c lass="token operator">== class="tags" href="/tags/C.html" title=c >c lass="token c lass="tags" href="/tags/C.html" title=c >c har">' ' class="tags" href="/tags/C.html" title=c >c lass="token operator">&& sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">[ i class="tags" href="/tags/C.html" title=c >c lass="token operator">+ class="tags" href="/tags/C.html" title=c >c lass="token number">1 class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">] class="tags" href="/tags/C.html" title=c >c lass="token operator">!= class="tags" href="/tags/C.html" title=c >c lass="token c lass="tags" href="/tags/C.html" title=c >c har">' ' class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">)
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">{
c lass="tags" href="/tags/C.html" title=c >c out class="tags" href="/tags/C.html" title=c >c lass="token operator"><< c lass="tags" href="/tags/C.html" title=c >c ount class="tags" href="/tags/C.html" title=c >c lass="token operator"><< class="tags" href="/tags/C.html" title=c >c lass="token c lass="tags" href="/tags/C.html" title=c >c har">',' class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
c lass="tags" href="/tags/C.html" title=c >c ount class="tags" href="/tags/C.html" title=c >c lass="token operator">= class="tags" href="/tags/C.html" title=c >c lass="token number">0 class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token keyword">c lass="tags" href="/tags/C.html" title=c >c ontinue class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">}
class="tags" href="/tags/C.html" title=c >c lass="token keyword">else class="tags" href="/tags/C.html" title=c >c lass="token keyword">if class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( i class="tags" href="/tags/C.html" title=c >c lass="token operator">== sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">. class="tags" href="/tags/C.html" title=c >c lass="token func lass="tags" href="/tags/C.html" title=c >c tion">size class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">) class="tags" href="/tags/C.html" title=c >c lass="token operator">- class="tags" href="/tags/C.html" title=c >c lass="token number">1 class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">)
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">{
c lass="tags" href="/tags/C.html" title=c >c ountclass="tags" href="/tags/C.html" title=c >c lass="token operator">++ class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
c lass="tags" href="/tags/C.html" title=c >c out class="tags" href="/tags/C.html" title=c >c lass="token operator"><< c lass="tags" href="/tags/C.html" title=c >c ount class="tags" href="/tags/C.html" title=c >c lass="token operator"><< endlclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">}
class="tags" href="/tags/C.html" title=c >c lass="token keyword">else class="tags" href="/tags/C.html" title=c >c lass="token keyword">if class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">[ iclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">] class="tags" href="/tags/C.html" title=c >c lass="token operator">!= class="tags" href="/tags/C.html" title=c >c lass="token c lass="tags" href="/tags/C.html" title=c >c har">' ' class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">)
c lass="tags" href="/tags/C.html" title=c >c ountclass="tags" href="/tags/C.html" title=c >c lass="token operator">++ class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">}
class="tags" href="/tags/C.html" title=c >c lass="token keyword">return class="tags" href="/tags/C.html" title=c >c lass="token number">0 class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">}
class="tags" href="/tags/C.html" title=c >c ode>
步骤一：使用 <c lass="tags" href="/tags/C.html" title=c >c ode>std::getlineclass="tags" href="/tags/C.html" title=c >c ode> 读取输入的整行文本。<c lass="tags" href="/tags/C.html" title=c >c ode>std::getlineclass="tags" href="/tags/C.html" title=c >c ode> 会保留空格并读取整行数据。 步骤二：通过 <c lass="tags" href="/tags/C.html" title=c >c ode>std::istringstreamclass="tags" href="/tags/C.html" title=c >c ode> 将输入字符串流化c lass="tags" href="/tags/C.html" title=c >c ;方便按空格分割单词。 步骤三：逐个读取单词并计算其长度c lass="tags" href="/tags/C.html" title=c >c ;存储在 <c lass="tags" href="/tags/C.html" title=c >c ode>lengthsclass="tags" href="/tags/C.html" title=c >c ode> 向量中。 步骤四：遍历 <c lass="tags" href="/tags/C.html" title=c >c ode>lengthsclass="tags" href="/tags/C.html" title=c >c ode> 向量c lass="tags" href="/tags/C.html" title=c >c ;格式化输出每个单词的长度c lass="tags" href="/tags/C.html" title=c >c ;确保用逗号隔开。 这种做法的优点是简洁高效c lass="tags" href="/tags/C.html" title=c >c ;能够处理多空格、标点符号等情况c lass="tags" href="/tags/C.html" title=c >c ;并确保格式正确。
老师的第一种做法采用了一个简单的循环c lass="tags" href="/tags/C.html" title=c >c ;逐个字符地判断单词的边界c lass="tags" href="/tags/C.html" title=c >c ;通过空格来划分不同的单词并输出其长度。
<c lass="tags" href="/tags/C.html" title=c >c ode c lass="tags" href="/tags/C.html" title=c >c lass="prism language-c lass="tags" href="/tags/C.html" title=c >c pp">class="tags" href="/tags/C.html" title=c >c lass="token mac lass="tags" href="/tags/C.html" title=c >c ro property">class="tags" href="/tags/C.html" title=c >c lass="token direc lass="tags" href="/tags/C.html" title=c >c tive-hash"># class="tags" href="/tags/C.html" title=c >c lass="token direc lass="tags" href="/tags/C.html" title=c >c tive keyword">inc lass="tags" href="/tags/C.html" title=c >c lude class="tags" href="/tags/C.html" title=c >c lass="token string"><iostream>
class="tags" href="/tags/C.html" title=c >c lass="token mac lass="tags" href="/tags/C.html" title=c >c ro property">class="tags" href="/tags/C.html" title=c >c lass="token direc lass="tags" href="/tags/C.html" title=c >c tive-hash"># class="tags" href="/tags/C.html" title=c >c lass="token direc lass="tags" href="/tags/C.html" title=c >c tive keyword">inc lass="tags" href="/tags/C.html" title=c >c lude class="tags" href="/tags/C.html" title=c >c lass="token string"><string>
class="tags" href="/tags/C.html" title=c >c lass="token keyword">using class="tags" href="/tags/C.html" title=c >c lass="token keyword">namespac lass="tags" href="/tags/C.html" title=c >c e stdclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token keyword">int class="tags" href="/tags/C.html" title=c >c lass="token func lass="tags" href="/tags/C.html" title=c >c tion">main class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">)
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">{
string sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token func lass="tags" href="/tags/C.html" title=c >c tion">getline class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( c lass="tags" href="/tags/C.html" title=c >c inclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">, sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">) class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token keyword">int i class="tags" href="/tags/C.html" title=c >c lass="token operator">= class="tags" href="/tags/C.html" title=c >c lass="token number">0 class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token keyword">int c lass="tags" href="/tags/C.html" title=c >c ount class="tags" href="/tags/C.html" title=c >c lass="token operator">= class="tags" href="/tags/C.html" title=c >c lass="token number">0 class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token keyword">for class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( i class="tags" href="/tags/C.html" title=c >c lass="token operator">= class="tags" href="/tags/C.html" title=c >c lass="token number">0 class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">; i class="tags" href="/tags/C.html" title=c >c lass="token operator">< sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">. class="tags" href="/tags/C.html" title=c >c lass="token func lass="tags" href="/tags/C.html" title=c >c tion">size class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">) class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">; iclass="tags" href="/tags/C.html" title=c >c lass="token operator">++ class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">)
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">{
class="tags" href="/tags/C.html" title=c >c lass="token keyword">if class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">[ iclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">] class="tags" href="/tags/C.html" title=c >c lass="token operator">== class="tags" href="/tags/C.html" title=c >c lass="token c lass="tags" href="/tags/C.html" title=c >c har">' ' class="tags" href="/tags/C.html" title=c >c lass="token operator">&& sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">[ i class="tags" href="/tags/C.html" title=c >c lass="token operator">+ class="tags" href="/tags/C.html" title=c >c lass="token number">1 class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">] class="tags" href="/tags/C.html" title=c >c lass="token operator">!= class="tags" href="/tags/C.html" title=c >c lass="token c lass="tags" href="/tags/C.html" title=c >c har">' ' class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">)
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">{
c lass="tags" href="/tags/C.html" title=c >c out class="tags" href="/tags/C.html" title=c >c lass="token operator"><< c lass="tags" href="/tags/C.html" title=c >c ount class="tags" href="/tags/C.html" title=c >c lass="token operator"><< class="tags" href="/tags/C.html" title=c >c lass="token c lass="tags" href="/tags/C.html" title=c >c har">',' class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
c lass="tags" href="/tags/C.html" title=c >c ount class="tags" href="/tags/C.html" title=c >c lass="token operator">= class="tags" href="/tags/C.html" title=c >c lass="token number">0 class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token keyword">c lass="tags" href="/tags/C.html" title=c >c ontinue class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">}
class="tags" href="/tags/C.html" title=c >c lass="token keyword">else class="tags" href="/tags/C.html" title=c >c lass="token keyword">if class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( i class="tags" href="/tags/C.html" title=c >c lass="token operator">== sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">. class="tags" href="/tags/C.html" title=c >c lass="token func lass="tags" href="/tags/C.html" title=c >c tion">size class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">) class="tags" href="/tags/C.html" title=c >c lass="token operator">- class="tags" href="/tags/C.html" title=c >c lass="token number">1 class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">)
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">{
c lass="tags" href="/tags/C.html" title=c >c ountclass="tags" href="/tags/C.html" title=c >c lass="token operator">++ class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
c lass="tags" href="/tags/C.html" title=c >c out class="tags" href="/tags/C.html" title=c >c lass="token operator"><< c lass="tags" href="/tags/C.html" title=c >c ount class="tags" href="/tags/C.html" title=c >c lass="token operator"><< endlclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">}
class="tags" href="/tags/C.html" title=c >c lass="token keyword">else class="tags" href="/tags/C.html" title=c >c lass="token keyword">if class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">[ iclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">] class="tags" href="/tags/C.html" title=c >c lass="token operator">!= class="tags" href="/tags/C.html" title=c >c lass="token c lass="tags" href="/tags/C.html" title=c >c har">' ' class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">)
c lass="tags" href="/tags/C.html" title=c >c ountclass="tags" href="/tags/C.html" title=c >c lass="token operator">++ class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">}
class="tags" href="/tags/C.html" title=c >c lass="token keyword">return class="tags" href="/tags/C.html" title=c >c lass="token number">0 class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">}
class="tags" href="/tags/C.html" title=c >c ode>
输入与循环：首先用 <c lass="tags" href="/tags/C.html" title=c >c ode>getline(c lass="tags" href="/tags/C.html" title=c >c in, s)class="tags" href="/tags/C.html" title=c >c ode> 读取整行输入。接着通过循环逐个字符遍历字符串 <c lass="tags" href="/tags/C.html" title=c >c ode>sclass="tags" href="/tags/C.html" title=c >c ode>c lass="tags" href="/tags/C.html" title=c >c ;当遇到空格并且下一个字符是非空格时c lass="tags" href="/tags/C.html" title=c >c ;说明当前单词已经结束c lass="tags" href="/tags/C.html" title=c >c ;输出当前单词的长度并重置计数器。 边界处理：如果当前字符是字符串的最后一个字符c lass="tags" href="/tags/C.html" title=c >c ;并且不是空格c lass="tags" href="/tags/C.html" title=c >c ;那么我们输出最后一个单词的长度。 这种做法的缺点是：
越界访问：在 <c lass="tags" href="/tags/C.html" title=c >c ode>s[i + 1]class="tags" href="/tags/C.html" title=c >c ode> 判断中c lass="tags" href="/tags/C.html" title=c >c ;如果 <c lass="tags" href="/tags/C.html" title=c >c ode>iclass="tags" href="/tags/C.html" title=c >c ode> 等于字符串最后的索引c lass="tags" href="/tags/C.html" title=c >c ;可能会导致访问越界。 输出格式问题：该方法在每个单词后输出一个逗号c lass="tags" href="/tags/C.html" title=c >c ;若没有适当的格式控制c lass="tags" href="/tags/C.html" title=c >c ;可能会导致最后一个单词后多余的逗号。 老师的第二种做法使用了一个 <c lass="tags" href="/tags/C.html" title=c >c ode>flagclass="tags" href="/tags/C.html" title=c >c ode> 标志来控制是否在输出单词长度前加逗号c lass="tags" href="/tags/C.html" title=c >c ;避免了多余的逗号输出。
<c lass="tags" href="/tags/C.html" title=c >c ode c lass="tags" href="/tags/C.html" title=c >c lass="prism language-c lass="tags" href="/tags/C.html" title=c >c pp">class="tags" href="/tags/C.html" title=c >c lass="token mac lass="tags" href="/tags/C.html" title=c >c ro property">class="tags" href="/tags/C.html" title=c >c lass="token direc lass="tags" href="/tags/C.html" title=c >c tive-hash"># class="tags" href="/tags/C.html" title=c >c lass="token direc lass="tags" href="/tags/C.html" title=c >c tive keyword">inc lass="tags" href="/tags/C.html" title=c >c lude class="tags" href="/tags/C.html" title=c >c lass="token string"><iostream>
class="tags" href="/tags/C.html" title=c >c lass="token mac lass="tags" href="/tags/C.html" title=c >c ro property">class="tags" href="/tags/C.html" title=c >c lass="token direc lass="tags" href="/tags/C.html" title=c >c tive-hash"># class="tags" href="/tags/C.html" title=c >c lass="token direc lass="tags" href="/tags/C.html" title=c >c tive keyword">inc lass="tags" href="/tags/C.html" title=c >c lude class="tags" href="/tags/C.html" title=c >c lass="token string"><string>
class="tags" href="/tags/C.html" title=c >c lass="token keyword">using class="tags" href="/tags/C.html" title=c >c lass="token keyword">namespac lass="tags" href="/tags/C.html" title=c >c e stdclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token keyword">int class="tags" href="/tags/C.html" title=c >c lass="token func lass="tags" href="/tags/C.html" title=c >c tion">main class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">)
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">{
string sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token keyword">bool flag class="tags" href="/tags/C.html" title=c >c lass="token operator">= class="tags" href="/tags/C.html" title=c >c lass="token boolean">true class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token keyword">while class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( c lass="tags" href="/tags/C.html" title=c >c in class="tags" href="/tags/C.html" title=c >c lass="token operator">>> sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">) class="tags" href="/tags/C.html" title=c >c lass="token c lass="tags" href="/tags/C.html" title=c >c omment">// 逐个读取单词
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">{
class="tags" href="/tags/C.html" title=c >c lass="token keyword">int len class="tags" href="/tags/C.html" title=c >c lass="token operator">= sclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">. class="tags" href="/tags/C.html" title=c >c lass="token func lass="tags" href="/tags/C.html" title=c >c tion">size class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">) class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">; class="tags" href="/tags/C.html" title=c >c lass="token c lass="tags" href="/tags/C.html" title=c >c omment">// 获取当前单词的长度
class="tags" href="/tags/C.html" title=c >c lass="token keyword">if class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">( flagclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">)
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">{
c lass="tags" href="/tags/C.html" title=c >c out class="tags" href="/tags/C.html" title=c >c lass="token operator"><< lenclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">; class="tags" href="/tags/C.html" title=c >c lass="token c lass="tags" href="/tags/C.html" title=c >c omment">// 输出第一个单词的长度
flag class="tags" href="/tags/C.html" title=c >c lass="token operator">= class="tags" href="/tags/C.html" title=c >c lass="token boolean">false class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">; class="tags" href="/tags/C.html" title=c >c lass="token c lass="tags" href="/tags/C.html" title=c >c omment">// 后续单词不再需要输出逗号
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">}
class="tags" href="/tags/C.html" title=c >c lass="token keyword">else
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">{
c lass="tags" href="/tags/C.html" title=c >c out class="tags" href="/tags/C.html" title=c >c lass="token operator"><< class="tags" href="/tags/C.html" title=c >c lass="token string">"," class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">; class="tags" href="/tags/C.html" title=c >c lass="token c lass="tags" href="/tags/C.html" title=c >c omment">// 输出逗号
c lass="tags" href="/tags/C.html" title=c >c out class="tags" href="/tags/C.html" title=c >c lass="token operator"><< lenclass="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">; class="tags" href="/tags/C.html" title=c >c lass="token c lass="tags" href="/tags/C.html" title=c >c omment">// 输出当前单词的长度
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">}
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">}
class="tags" href="/tags/C.html" title=c >c lass="token keyword">return class="tags" href="/tags/C.html" title=c >c lass="token number">0 class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">;
class="tags" href="/tags/C.html" title=c >c lass="token punc lass="tags" href="/tags/C.html" title=c >c tuation">}
class="tags" href="/tags/C.html" title=c >c ode>
标志控制：通过 <c lass="tags" href="/tags/C.html" title=c >c ode>flagclass="tags" href="/tags/C.html" title=c >c ode> 标志来判断是否是第一个单词c lass="tags" href="/tags/C.html" title=c >c ;若是第一个单词则不加逗号c lass="tags" href="/tags/C.html" title=c >c ;后续单词前才加逗号。 逐个读取单词：使用 <c lass="tags" href="/tags/C.html" title=c >c ode>c lass="tags" href="/tags/C.html" title=c >c in >> sclass="tags" href="/tags/C.html" title=c >c ode> 逐个读取单词c lass="tags" href="/tags/C.html" title=c >c ;并且通过 <c lass="tags" href="/tags/C.html" title=c >c ode>s.size()class="tags" href="/tags/C.html" title=c >c ode> 获取每个单词的长度。 这段代码的优点是结构简单c lass="tags" href="/tags/C.html" title=c >c ;能正确地处理输出格式c lass="tags" href="/tags/C.html" title=c >c ;避免了不必要的逗号。但同样c lass="tags" href="/tags/C.html" title=c >c ;它也依赖于 <c lass="tags" href="/tags/C.html" title=c >c ode>c lass="tags" href="/tags/C.html" title=c >c in >> sclass="tags" href="/tags/C.html" title=c >c ode> 来分割单词c lass="tags" href="/tags/C.html" title=c >c ;因此对于包含标点符号的情况c lass="tags" href="/tags/C.html" title=c >c ;它可能无法按预期工作。
处理多空格与标点符号：我的做法通过 <c lass="tags" href="/tags/C.html" title=c >c ode>std::istringstreamclass="tags" href="/tags/C.html" title=c >c ode> 来处理输入c lass="tags" href="/tags/C.html" title=c >c ;它能够应对输入中有多个空格的情况c lass="tags" href="/tags/C.html" title=c >c ;也可以更好地处理带有标点符号的单词。相比之下c lass="tags" href="/tags/C.html" title=c >c ;老师的两种做法都假设每个单词由空格分隔c lass="tags" href="/tags/C.html" title=c >c ;可能无法准确处理标点符号（如连字符 <c lass="tags" href="/tags/C.html" title=c >c ode>1990-01-02class="tags" href="/tags/C.html" title=c >c ode>）。 代码简洁性：老师的第二种做法相较于第一种c lass="tags" href="/tags/C.html" title=c >c ;代码更为简洁和清晰c lass="tags" href="/tags/C.html" title=c >c ;特别是通过 <c lass="tags" href="/tags/C.html" title=c >c ode>flagclass="tags" href="/tags/C.html" title=c >c ode> 控制逗号的输出c lass="tags" href="/tags/C.html" title=c >c ;减少了不必要的判断。 输出格式：我的做法在处理输出格式时c lass="tags" href="/tags/C.html" title=c >c ;特别注意了最后一个单词后不输出逗号c lass="tags" href="/tags/C.html" title=c >c ;确保格式的规范性。老师的第一种做法虽然通过 <c lass="tags" href="/tags/C.html" title=c >c ode>c lass="tags" href="/tags/C.html" title=c >c ontinueclass="tags" href="/tags/C.html" title=c >c ode> 处理了逗号输出c lass="tags" href="/tags/C.html" title=c >c ;但仍然存在越界访问的问题。 扩展性：我的方法相比之下更加灵活c lass="tags" href="/tags/C.html" title=c >c ;能处理更复杂的输入c lass="tags" href="/tags/C.html" title=c >c ;如包含多个空格或带标点符号的单词。 边界检查：在老师的第一种做法中c lass="tags" href="/tags/C.html" title=c >c ;应该确保 <c lass="tags" href="/tags/C.html" title=c >c ode>i + 1class="tags" href="/tags/C.html" title=c >c ode> 不会越界c lass="tags" href="/tags/C.html" title=c >c ;因此需要在访问 <c lass="tags" href="/tags/C.html" title=c >c ode>s[i + 1]class="tags" href="/tags/C.html" title=c >c ode> 时增加边界判断。 使用 <c lass="tags" href="/tags/C.html" title=c >c ode>getlineclass="tags" href="/tags/C.html" title=c >c ode>：对于包含多个空格或特殊字符的输入c lass="tags" href="/tags/C.html" title=c >c ;使用 <c lass="tags" href="/tags/C.html" title=c >c ode>getlineclass="tags" href="/tags/C.html" title=c >c ode> 更为合适c lass="tags" href="/tags/C.html" title=c >c ;避免了空格导致的分割问题。 通过这次分析c lass="tags" href="/tags/C.html" title=c >c ;我们比较了三种不同的解法：我的做法、老师的第一种做法和第二种做法。每种方法都有其优缺点c lass="tags" href="/tags/C.html" title=c >c ;但综合来看c lass="tags" href="/tags/C.html" title=c >c ;使用 <c lass="tags" href="/tags/C.html" title=c >c ode>std::istringstreamclass="tags" href="/tags/C.html" title=c >c ode> 来处理输入c lass="tags" href="/tags/C.html" title=c >c ;并通过 <c lass="tags" href="/tags/C.html" title=c >c ode>vec lass="tags" href="/tags/C.html" title=c >c torclass="tags" href="/tags/C.html" title=c >c ode> 存储每个单词的长度是最灵活且易于扩展的方案。与此同时c lass="tags" href="/tags/C.html" title=c >c ;优化输出格式的细节也是保证代码规范性和稳定性的关键。
这道题不仅帮助我们理解了如何处理字符串和空格c lass="tags" href="/tags/C.html" title=c >c ;还强调了格式化输出的重要性。在面对复杂的输入和输出格式时c lass="tags" href="/tags/C.html" title=c >c ;良好的代码结构和细节优化能够让我们的程序更健壮、易读。
c >c ="https://img-blog.c lass="tags" href="/tags/C.html" title=c >c sdnimg.c lass="tags" href="/tags/C.html" title=c >c n/direc lass="tags" href="/tags/C.html" title=c >c t/00d4fdeb7b0d4dbb99e88f325ef249d8.gif#pic lass="tags" href="/tags/C.html" title=c >c _c lass="tags" href="/tags/C.html" title=c >c enter" alt="在这里插入图片描述" width="1000" height="100" />
c >c ="https://i-blog.c lass="tags" href="/tags/C.html" title=c >c sdnimg.c lass="tags" href="/tags/C.html" title=c >c n/direc lass="tags" href="/tags/C.html" title=c >c t/fc lass="tags" href="/tags/C.html" title=c >c 6ac lass="tags" href="/tags/C.html" title=c >c 6d93b4745b591bb8a8e48f86779.png#pic lass="tags" href="/tags/C.html" title=c >c _right" alt="在这里插入图片描述" width="1" />c >c ="https://i-blog.c lass="tags" href="/tags/C.html" title=c >c sdnimg.c lass="tags" href="/tags/C.html" title=c >c n/direc lass="tags" href="/tags/C.html" title=c >c t/fc lass="tags" href="/tags/C.html" title=c >c 6ac lass="tags" href="/tags/C.html" title=c >c 6d93b4745b591bb8a8e48f86779.png#pic lass="tags" href="/tags/C.html" title=c >c _right" alt="在这里插入图片描述" width="1" />c >c ="https://i-blog.c lass="tags" href="/tags/C.html" title=c >c sdnimg.c lass="tags" href="/tags/C.html" title=c >c n/direc lass="tags" href="/tags/C.html" title=c >c t/fc lass="tags" href="/tags/C.html" title=c >c 6ac lass="tags" href="/tags/C.html" title=c >c 6d93b4745b591bb8a8e48f86779.png#pic lass="tags" href="/tags/C.html" title=c >c _right" alt="在这里插入图片描述" width="1" />c >c ="https://i-blog.c lass="tags" href="/tags/C.html" title=c >c sdnimg.c lass="tags" href="/tags/C.html" title=c >c n/direc lass="tags" href="/tags/C.html" title=c >c t/fc lass="tags" href="/tags/C.html" title=c >c 6ac lass="tags" href="/tags/C.html" title=c >c 6d93b4745b591bb8a8e48f86779.png#pic lass="tags" href="/tags/C.html" title=c >c _right" alt="在这里插入图片描述" width="1" />c >c ="https://i-blog.c lass="tags" href="/tags/C.html" title=c >c sdnimg.c lass="tags" href="/tags/C.html" title=c >c n/direc lass="tags" href="/tags/C.html" title=c >c t/fc lass="tags" href="/tags/C.html" title=c >c 6ac lass="tags" href="/tags/C.html" title=c >c 6d93b4745b591bb8a8e48f86779.png#pic lass="tags" href="/tags/C.html" title=c >c _right" alt="在这里插入图片描述" width="1" />c >c ="https://i-blog.c lass="tags" href="/tags/C.html" title=c >c sdnimg.c lass="tags" href="/tags/C.html" title=c >c n/direc lass="tags" href="/tags/C.html" title=c >c t/fc lass="tags" href="/tags/C.html" title=c >c 6ac lass="tags" href="/tags/C.html" title=c >c 6d93b4745b591bb8a8e48f86779.png#pic lass="tags" href="/tags/C.html" title=c >c _right" alt="在这里插入图片描述" width="1" />c >c ="https://i-blog.c lass="tags" href="/tags/C.html" title=c >c sdnimg.c lass="tags" href="/tags/C.html" title=c >c n/direc lass="tags" href="/tags/C.html" title=c >c t/fc lass="tags" href="/tags/C.html" title=c >c 6ac lass="tags" href="/tags/C.html" title=c >c 6d93b4745b591bb8a8e48f86779.png#pic lass="tags" href="/tags/C.html" title=c >c _right" alt="在这里插入图片描述" width="1" />c >c ="https://i-blog.c lass="tags" href="/tags/C.html" title=c >c sdnimg.c lass="tags" href="/tags/C.html" title=c >c n/direc lass="tags" href="/tags/C.html" title=c >c t/fc lass="tags" href="/tags/C.html" title=c >c 6ac lass="tags" href="/tags/C.html" title=c >c 6d93b4745b591bb8a8e48f86779.png#pic lass="tags" href="/tags/C.html" title=c >c _right" alt="在这里插入图片描述" width="1" />c >c ="https://i-blog.c lass="tags" href="/tags/C.html" title=c >c sdnimg.c lass="tags" href="/tags/C.html" title=c >c n/direc lass="tags" href="/tags/C.html" title=c >c t/fc lass="tags" href="/tags/C.html" title=c >c 6ac lass="tags" href="/tags/C.html" title=c >c 6d93b4745b591bb8a8e48f86779.png#pic lass="tags" href="/tags/C.html" title=c >c _right" alt="在这里插入图片描述" width="1" />c >c ="https://i-blog.c lass="tags" href="/tags/C.html" title=c >c sdnimg.c lass="tags" href="/tags/C.html" title=c >c n/direc lass="tags" href="/tags/C.html" title=c >c t/fc lass="tags" href="/tags/C.html" title=c >c 6ac lass="tags" href="/tags/C.html" title=c >c 6d93b4745b591bb8a8e48f86779.png#pic lass="tags" href="/tags/C.html" title=c >c _right" alt="在这里插入图片描述" width="1" />
学习C++的建议
C++ 是一门强大且广泛应用的编程语言c lass="tags" href="/tags/C.html" title=c >c ;无论是系统开发、游戏开发还是高性能计算c lass="tags" href="/tags/C.html" title=c >c ;它都有不可替代的地位。然而c lass="tags" href="/tags/C.html" title=c >c ;学习C++的道路可能是陡峭的c lass="tags" href="/tags/C.html" title=c >c ;为了帮助你更高效地掌握这门语言c lass="tags" href="/tags/C.html" title=c >c ;我总结了一些学习建议和经验。
1. 理解C++的基础 学习重点：
掌握基本语法 ：
学会声明变量、条件语句、循环、函数等核心语法。 掌握数组、指针、引用等基础知识。 熟悉标准输入输出 ：
掌握 <c lass="tags" href="/tags/C.html" title=c >c ode>c lass="tags" href="/tags/C.html" title=c >c inclass="tags" href="/tags/C.html" title=c >c ode> 和 <c lass="tags" href="/tags/C.html" title=c >c ode>c lass="tags" href="/tags/C.html" title=c >c outclass="tags" href="/tags/C.html" title=c >c ode> 的用法。 理解格式化输出c lass="tags" href="/tags/C.html" title=c >c ;例如 <c lass="tags" href="/tags/C.html" title=c >c ode>std::setwclass="tags" href="/tags/C.html" title=c >c ode> 和 <c lass="tags" href="/tags/C.html" title=c >c ode>std::fixedclass="tags" href="/tags/C.html" title=c >c ode>。 记住编译器的角色 ：
理解源代码如何通过编译器转换为可执行程序c lass="tags" href="/tags/C.html" title=c >c ;选择一款好的IDE（如Visual Studio、Clion、VSCode）。 class="tags" href="/tags/C.html" title=c >c kquote>
建议 ：用大量小程序练习这些基础语法c lass="tags" href="/tags/C.html" title=c >c ;比如写一个计算器、模拟猜数字游戏等。
class="tags" href="/tags/C.html" title=
c >
c kquote>
2. 深入学习C++的特性 学习重点：
面向对象编程（OOP） ：
理解类和对象c lass="tags" href="/tags/C.html" title=c >c ;熟悉如何定义类、成员变量和成员函数。 掌握封装、继承、多态三大核心特性。 内存管理 ：
理解指针的用法c lass="tags" href="/tags/C.html" title=c >c ;掌握动态内存分配（<c lass="tags" href="/tags/C.html" title=c >c ode>newclass="tags" href="/tags/C.html" title=c >c ode> 和 <c lass="tags" href="/tags/C.html" title=c >c ode>deleteclass="tags" href="/tags/C.html" title=c >c ode>）。 学习如何避免内存泄漏c lass="tags" href="/tags/C.html" title=c >c ;熟悉智能指针（如<c lass="tags" href="/tags/C.html" title=c >c ode>std::unique_ptrclass="tags" href="/tags/C.html" title=c >c ode> 和 <c lass="tags" href="/tags/C.html" title=c >c ode>std::shared_ptrclass="tags" href="/tags/C.html" title=c >c ode>）。 标准模板库（STL） ：
熟悉常用的容器（如<c lass="tags" href="/tags/C.html" title=c >c ode>vec lass="tags" href="/tags/C.html" title=c >c torclass="tags" href="/tags/C.html" title=c >c ode>、<c lass="tags" href="/tags/C.html" title=c >c ode>mapclass="tags" href="/tags/C.html" title=c >c ode>、<c lass="tags" href="/tags/C.html" title=c >c ode>setclass="tags" href="/tags/C.html" title=c >c ode>）和算法（如<c lass="tags" href="/tags/C.html" title=c >c ode>sortclass="tags" href="/tags/C.html" title=c >c ode>、<c lass="tags" href="/tags/C.html" title=c >c ode>findclass="tags" href="/tags/C.html" title=c >c ode>）。 掌握迭代器的用法。 异常处理 ：
学习使用<c lass="tags" href="/tags/C.html" title=c >c ode>try-c lass="tags" href="/tags/C.html" title=c >c atc lass="tags" href="/tags/C.html" title=c >c hclass="tags" href="/tags/C.html" title=c >c ode>块处理异常。 理解异常的用途以及如何设计健壮的代码。 class="tags" href="/tags/C.html" title=c >c kquote>
建议 ：尝试开发一个小型项目c lass="tags" href="/tags/C.html" title=c >c ;比如一个学生管理系统c lass="tags" href="/tags/C.html" title=c >c ;综合应用类、STL、指针和动态内存分配。
class="tags" href="/tags/C.html" title=
c >
c kquote>
3. 掌握进阶内容 学习重点：
模板 ：
理解函数模板和类模板c lass="tags" href="/tags/C.html" title=c >c ;掌握泛型编程思想。 学习模板特化和模板元编程的基本概念。 多线程与并发 ：
学习 C++11 提供的多线程支持（如<c lass="tags" href="/tags/C.html" title=c >c ode>std::threadclass="tags" href="/tags/C.html" title=c >c ode>）。 熟悉互斥锁（<c lass="tags" href="/tags/C.html" title=c >c ode>std::mutexclass="tags" href="/tags/C.html" title=c >c ode>）和条件变量（<c lass="tags" href="/tags/C.html" title=c >c ode>std::c lass="tags" href="/tags/C.html" title=c >c ondition_variableclass="tags" href="/tags/C.html" title=c >c ode>）。 C++与C的兼容性 ：
学习如何在C++中使用C语言代码c lass="tags" href="/tags/C.html" title=c >c ;理解C和C++的区别。 掌握C风格字符串（<c lass="tags" href="/tags/C.html" title=c >c ode>c lass="tags" href="/tags/C.html" title=c >c har[]class="tags" href="/tags/C.html" title=c >c ode>）和C++字符串（<c lass="tags" href="/tags/C.html" title=c >c ode>std::stringclass="tags" href="/tags/C.html" title=c >c ode>）的转换。 class="tags" href="/tags/C.html" title=c >c kquote>
建议 ：在这一阶段c lass="tags" href="/tags/C.html" title=c >c ;可以挑战更复杂的项目c lass="tags" href="/tags/C.html" title=c >c ;比如开发一个小型的HTTP服务器c lass="tags" href="/tags/C.html" title=c >c ;学习网络编程并结合多线程。
class="tags" href="/tags/C.html" title=
c >
c kquote>
4. 学习资源与实践方法 学习资源：
书籍 ：
《C++ Primer》：非常适合初学者的经典书籍。 《Effec lass="tags" href="/tags/C.html" title=c >c tive C++》：进阶学习C++最佳实践的指南。 《The C++ Programming Language》：Bjarne Stroustrup（C++之父）的权威著作。 在线课程 ：
Coursera 上的 C++ 编程课程。 YouTube 上免费的 C++ 系列教程。 社区与文档 ：
参与C++相关的论坛（如CSDN、Stac lass="tags" href="/tags/C.html" title=c >c k Overflow）。 阅读官方文档（https://en.c lass="tags" href="/tags/C.html" title=c >c ppreferenc lass="tags" href="/tags/C.html" title=c >c e.c lass="tags" href="/tags/C.html" title=c >c om）。 实践方法：
多写代码c lass="tags" href="/tags/C.html" title=c >c ;多调试 ：
每学一个概念后c lass="tags" href="/tags/C.html" title=c >c ;写至少两个示例代码并进行调试。 做小项目 ：
从简单的控制台程序开始c lass="tags" href="/tags/C.html" title=c >c ;比如文件读写、计算器、小游戏等。 慢慢过渡到图形界面或网络程序开发。 阅读他人代码 ：
阅读开源项目的代码c lass="tags" href="/tags/C.html" title=c >c ;理解优秀代码的设计思路。 参加编程比赛 ：
比如 LeetCode 或 Codeforc lass="tags" href="/tags/C.html" title=c >c esc lass="tags" href="/tags/C.html" title=c >c ;可以帮助你提升算法能力和C++的熟练度。 5. 保持耐心与兴趣
复杂的语法 ：如模板、智能指针、多线程等。调试困难 ：指针错误、内存泄漏、未定义行为可能让人头疼。如何应对：
将大问题拆解成小问题c lass="tags" href="/tags/C.html" title=c >c ;逐步解决。 不断重复基础知识c lass="tags" href="/tags/C.html" title=c >c ;以加深理解。 保持兴趣c lass="tags" href="/tags/C.html" title=c >c ;尝试一些有趣的项目c lass="tags" href="/tags/C.html" title=c >c ;比如写一个游戏、制作一个简单的图形程序。 小结 c lass="tags" href="/tags/C.html" title=c >c ;从基础语法到面向对象编程c lass="tags" href="/tags/C.html" title=c >c ;再到进阶的模板和并发编程c lass="tags" href="/tags/C.html" title=c >c ;每一步都需要耐心和实践。通过充分利用学习资源、进行大量编码练习c lass="tags" href="/tags/C.html" title=c >c ;以及挑战实际项目c lass="tags" href="/tags/C.html" title=c >c ;你一定可以成为C++的高手。记住c lass="tags" href="/tags/C.html" title=c >c ;学习的核心在于理解c lass="tags" href="/tags/C.html" title=c >c ;而非死记硬背。
祝你学有所成c lass="tags" href="/tags/C.html" title=c >c ;享受C++编程的乐趣！
