stdstring_details.html

标准c/c++帮助文档

          <pre><span lang="EN-US">&nbsp;<o:p>
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          <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span>#include &lt;string.h&gt;</span></pre>
          <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span>char *strcat( char *str1, const char *str2 );</span></pre>
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  <p style="tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt">功能：函数将字符串<i><span lang="EN-US">str2</span></i><span lang="EN-US"> 
  连接到<i>str1</i>的末端，并返回指针<i>str1</i>. 例如：</span></p> 
  <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span>printf( &quot;Enter your name: &quot; );</span></pre>
  <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span>scanf( &quot;%s&quot;, name );</span></pre>
  <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span>title = strcat( name, &quot; the Great&quot; );</span></pre>
  <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span>printf( &quot;Hello, %s\n&quot;, title );</span></pre>
  <p class="MsoNormal" style="tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><i><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">相关主题</span><span lang="EN-US">:</span></i><span lang="EN-US"><br>
  <strong><a href="#strchr">strchr()</a>, <a href="#strcmp">strcmp()</a>, and <a href="#strcpy">strcpy()</a>.</strong></span></p>
  <div class="MsoNormal" style="TEXT-ALIGN: center; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" align="center">
    <span lang="EN-US">
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  <h2 style="tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span lang="EN-US">
	<a name="strchr">strchr</a></span></h2>
  <p class="MsoNormal" style="tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><i><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">语法</span><span lang="EN-US">:</span></i></p>
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          <pre><span lang="EN-US">&nbsp;<o:p>
</o:p>
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          <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span>#include &lt;string.h&gt;</span></pre>
          <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span>char *strchr( const char *str, int ch );</span></pre>
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  <p style="tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt">功能：函数返回一个指向<i><span lang="EN-US">str</span></i><span lang="EN-US"> 
  中<i>ch</i> 首次出现的位置，当没有在<i>str</i> 中找<i>ch</i>到返回NULL。</span></p> 
  <p class="MsoNormal" style="tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><i><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">相关主题</span><span lang="EN-US">:</span></i><span lang="EN-US"><br>
  <strong><a href="#strpbrk">strpbrk()</a>, <a href="#strspn">strspn()</a>, <a href="#strstr">strstr()</a>, 
  and <a href="#strtok">strtok()</a>.</strong></span></p>
  <div class="MsoNormal" style="TEXT-ALIGN: center; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" align="center">
    <span lang="EN-US">
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  <h2 style="tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span lang="EN-US">
	<a name="strcmp">strcmp</a></span></h2>
  <p class="MsoNormal" style="tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><i><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">语法</span><span lang="EN-US">:</span></i></p>
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          <pre><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></pre>
          <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span>#include &lt;string.h&gt;</span></pre>
          <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span>int strcmp( const char *str1, const char *str2 );</span></pre>
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  <p style="tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt">功能：比较字符串<i><span lang="EN-US">str1</span></i><span lang="EN-US"> 
  and <i>str2</i>, 返回值如下:</span></p> 
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          <p class="MsoNormal"><strong><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">返回值</span></strong><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体"><o:p>
          </o:p>
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          <p class="MsoNormal"><strong><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">解释</span></strong><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体"><o:p>
          </o:p>
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          <p class="MsoNormal"><span lang="EN-US">less than 0</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体"><o:p> 
          </o:p>
          </span></p>
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          <p class="MsoNormal"><span lang="EN-US">str1 is less than str2</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体"><o:p>
          </o:p>
          </span></p>
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          <p class="MsoNormal"><span lang="EN-US">equal to 0</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体"><o:p>
          </o:p>
          </span></p>
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          <p class="MsoNormal"><span lang="EN-US">str1 is equal to str2</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体"><o:p>
          </o:p>
          </span></p>
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          <p class="MsoNormal"><span lang="EN-US">greater than 0</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体"><o:p>
          </o:p>
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          <p class="MsoNormal"><span lang="EN-US">str1 is greater than str2</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体"><o:p>
          </o:p>
          </span></p>
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  <p style="tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt">例如<span lang="EN-US">:</span></p>
  <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span>printf( &quot;Enter your name: &quot; );</span></pre>
  <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span>scanf( &quot;%s&quot;, name );</span></pre>
  <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span>if( strcmp( name, &quot;Mary&quot; ) == 0 )</span></pre>
  <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>printf( &quot;Hello, Dr. Mary!\n&quot; );</span></pre>
  <p class="MsoNormal" style="tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><i><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">相关主题</span><span lang="EN-US">:</span></i><span lang="EN-US"><br>
  <strong><a href="#memcmp">memcmp()</a>, <a href="#strchr">strchr()</a>, <a href="#strcpy">strcpy()</a>, 
  and <a href="#strncmp">strncmp()</a>.</strong></span></p>
  <div class="MsoNormal" style="TEXT-ALIGN: center; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt" align="center">
    <span lang="EN-US">
    <hr align="center" width="100%" SIZE="2">
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  <h2 style="tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span lang="EN-US">
	<a name="strcoll">strcoll</a></span></h2>
  <p class="MsoNormal" style="tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><i><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">语法</span><span lang="EN-US">:</span></i></p>
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          <pre><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></pre>
          <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span>#include &lt;string.h&gt;</span></pre>
          <pre><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span>int strcoll( const char *str1, const char *str2 );</span></pre>
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  <p style="tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt">功能：比较字符串<i><span lang="EN-US">str1</span></i><span lang="EN-US"> 
  和 <i>str2</i>, 很象<a href="#strcmp">strcmp</a>. 但是, strcoll()