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📁 linux下一些常用的C函数的说明和例子
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        <div align="left"><font face="Times New Roman, Times, serif"> <a href="function/01.html#linuxc1" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/01.html#linuxc1" target="mainFrame"><font size="2">字符测试篇</font></a><br>
          <a href="function/01.html#linuxc1" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/01.html#linuxc1" target="mainFrame">isalnum</a><br>
          <a href="function/01.html#linuxc2" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/01.html#linuxc2" target="mainFrame">isalpha</a><br>
          <a href="function/01.html#linuxc3" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/01.html#linuxc3" target="mainFrame">isascii</a><br>
          <a href="function/01.html#linuxc4" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/01.html#linuxc4" target="mainFrame">iscntrl</a><br>
          <a href="function/01.html#linuxc5" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/01.html#linuxc5" target="mainFrame">isdigit</a><br>
          <a href="function/01.html#linuxc6" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/01.html#linuxc6" target="mainFrame">isgraphis</a><br>
          <a href="function/01.html#linuxc7" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/01.html#linuxc7" target="mainFrame">islower</a><br>
          <a href="function/01.html#linuxc8" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/01.html#linuxc8" target="mainFrame">isprint</a><br>
          <a href="function/01.html#linuxc9" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/01.html#linuxc9" target="mainFrame">isspace</a><br>
          <a href="function/01.html#linuxc10" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/01.html#linuxc10" target="mainFrame">ispunct</a><br>
          <a href="function/01.html#linuxc11" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/01.html#linuxc11" target="mainFrame">isupper</a><br>
          <a href="function/01.html#linuxc12" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/01.html#linuxc12" target="mainFrame">isxdigit</a><br>
          <br>
          <a href="function/02.html#linuxc13" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/02.html#linuxc13" target="mainFrame"><font size="2">字符串转换篇</font></a><br>
          <a href="function/02.html#linuxc14" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/02.html#linuxc14" target="mainFrame">atof</a><br>
          <a href="function/02.html#linuxc15" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/02.html#linuxc15" target="mainFrame">atoi</a><br>
          <a href="function/02.html#linuxc16" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/02.html#linuxc16" target="mainFrame">atol</a><br>
          <a href="function/02.html#linuxc17" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/02.html#linuxc17" target="mainFrame">gcvt</a><br>
          <a href="function/02.html#linuxc18" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/02.html#linuxc18" target="mainFrame">strtod</a><br>
          <a href="function/02.html#linuxc19" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/02.html#linuxc19" target="mainFrame">strtol</a><br>
          <a href="function/02.html#linuxc20" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/02.html#linuxc20" target="mainFrame">strtoul</a><br>
          <a href="function/02.html#linuxc21" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/02.html#linuxc21" target="mainFrame">toascii</a><br>
          <a href="function/02.html#linuxc22" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/02.html#linuxc22" target="mainFrame">tolower</a><br>
          <a href="function/02.html#linuxc23" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/02.html#linuxc23" target="mainFrame">toupper</a><br>
          <br>
          <a href="function/03.html#linuxc24" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/03.html#linuxc24" target="mainFrame"><font size="2">内存控制篇</font></a><br>
          <a href="function/03.html#linuxc25" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/03.html#linuxc25" target="mainFrame">calloc</a><br>
          <a href="function/03.html#linuxc26" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/03.html#linuxc26" target="mainFrame">free</a><br>
          <a href="function/03.html#linuxc27" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/03.html#linuxc27" target="mainFrame">getpagesize</a><br>
          <a href="function/03.html#linuxc28" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/03.html#linuxc28" target="mainFrame">malloc</a><br>
          <a href="function/03.html#linuxc29" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/03.html#linuxc29" target="mainFrame">mmap</a><br>
          <a href="function/03.html#linuxc30" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/03.html#linuxc30" target="mainFrame">munmap</a><br>
          <br>
          <a href="function/04.html#linuxc31" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/04.html#linuxc31" target="mainFrame"><font size="2">日期时间篇</font></a><br>
          <a href="function/04.html#linuxc32" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/04.html#linuxc32" target="mainFrame">asctime</a><br>
          <a href="function/04.html#linuxc33" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/04.html#linuxc33" target="mainFrame">ctime</a><br>
          <a href="function/04.html#linuxc34" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/04.html#linuxc34" target="mainFrame">gettimeofday</a><br>
          <a href="function/04.html#linuxc35" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/04.html#linuxc35" target="mainFrame">gmtime</a><br>
          <a href="function/04.html#linuxc36" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/04.html#linuxc36" target="mainFrame">localtime</a><br>
          <a href="function/04.html#linuxc37" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/04.html#linuxc37" target="mainFrame">mktime</a><br>
          <a href="function/04.html#linuxc38" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/04.html#linuxc38" target="mainFrame">settimeofday</a><br>
          <a href="function/04.html#linuxc39" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/04.html#linuxc39" target="mainFrame">time</a><br>
          <br>
          <a href="function/05.html#linuxc40" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc40" target="mainFrame"><font size="2">内存及字符串操作篇</font></a><br>
          <a href="function/05.html#linuxc41" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc41" target="mainFrame">bcmp</a><br>
          <a href="function/05.html#linuxc42" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc42" target="mainFrame">bcopy</a><br>
          <a href="function/05.html#linuxc43" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc43" target="mainFrame">bzero</a><br>
          <a href="function/05.html#linuxc44" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc44" target="mainFrame">index</a><br>
          <a href="function/05.html#linuxc45" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc45" target="mainFrame">memccpy</a><br>
          <a href="function/05.html#linuxc46" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc46" target="mainFrame">memchr</a><br>
          <a href="function/05.html#linuxc47" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc47" target="mainFrame">memcmp</a><br>
          <a href="function/05.html#linuxc48" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc48" target="mainFrame">memcpy</a><br>
          <a href="function/05.html#linuxc49" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc49" target="mainFrame">memmove</a><br>
          <a href="function/05.html#linuxc50" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc50" target="mainFrame">memset</a><br>
          <a href="function/05.html#linuxc51" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc51" target="mainFrame">rindex</a><br>
          <a href="function/05.html#linuxc52" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc52" target="mainFrame">strcasecmp</a><br>
          <a href="function/05.html#linuxc53" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc53" target="mainFrame">strcat</a><br>
          <a href="function/05.html#linuxc54" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc54" target="mainFrame">strchr</a><br>
          <a href="function/05.html#linuxc55" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc55" target="mainFrame">strcmp</a><br>
          <a href="function/05.html#linuxc56" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc56" target="mainFrame">strcoll</a><br>
          <a href="function/05.html#linuxc57" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc57" target="mainFrame">strcpy</a><br>
          <a href="function/05.html#linuxc58" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc58" target="mainFrame">strcspn</a><br>
          <a href="function/05.html#linuxc59" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc59" target="mainFrame">strdup</a><br>
          <a href="function/05.html#linuxc60" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc60" target="mainFrame">strlen</a><br>
          <a href="function/05.html#linuxc61" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc61" target="mainFrame">strncasecmp</a><br>
          <a href="function/05.html#linuxc62" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc62" target="mainFrame">strncat</a><br>
          <a href="function/05.html#linuxc63" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc63" target="mainFrame">strncpy</a><br>
          <a href="function/05.html#linuxc64" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc64" target="mainFrame">strpbrk</a><br>
          <a href="function/05.html#linuxc65" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc65" target="mainFrame">strrchr</a><br>
          <a href="function/05.html#linuxc66" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc66" target="mainFrame">strspn</a><br>
          <a href="function/05.html#linuxc67" tppabs="http://net.pku.edu.cn/~yhf/linux_c/function/05.html#linuxc67" target="mainFrame">strstr</a><br>
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