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Category:C Drivers - Revision history
2026-07-24T11:54:06Z
Revision history for this page on the wiki
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https://w.electrodragon.com/w/index.php?title=Category:C_Drivers&diff=23596&oldid=prev
Chao at 11:21, 21 November 2019
2019-11-21T11:21:14Z
<p></p>
<p><b>New page</b></p><div>{| class="wikitable sortable"<br />
|-<br />
! Header text !! category !!Header text !! Header text<br />
|-<br />
| memcmp || string.h || 函数memcmp用于比较字符串s1与s2的前size个字符。如果两上字符块相同，memcmp将返回0。|| 效率更好<br />
|-<br />
| strcmp || string.h || 比较字符串 直到 /0|| Example<br />
|-<br />
| strncmp || string.h || strncmp函数是指定比较size个字符。也就是说，如果字符串s1与s2的前size个字符相同，函数返回值为0。 || Example<br />
|-<br />
| memcpy || string.h || Example || Example<br />
|-<br />
| itoa || stdlib.h || int 转换成二进制 ||<br />
|-<br />
| printf || string.h || <br />
<br />
|}<br />
<br />
<br />
== memcpy ==<br />
* 字符串 -> 字符组, 作用：将s中的字符串复制到字符数组d中。<br />
<source lang="c"><br />
//memcpy.c<br />
#include<stdio.h><br />
#include<string.h><br />
intmain() {<br />
char*s="Golden Global View";<br />
chard[20];<br />
clrscr();<br />
memcpy(d,s,strlen(s));<br />
d[strlen(s)]='\0';//因为从d[0]开始复制，总长度为strlen(s)，d[strlen(s)]置为结束符<br />
printf("%s",d);<br />
getchar();<br />
return0;<br />
}<br />
</source><br />
* 输出结果：GoldenGlobal View<br />
<br />
<br />
== REF ==<br />
* https://blog.csdn.net/tigerjibo/article/details/6841531<br />
[[category: C]]</div>
Chao