[转帖]自己实现strcpy()

鼯鼠

/*
10 * Note : The user must be sure the destination string of the
11 * mystrcpy() is large enough, if the space is not large
12 * enough, then anything might happen.
13 */
14 #include <stdio.h>
15 #include <string.h>
16
17 char *mystrcpy(char *dest, char const *src)
18 {
19 char *ptr = dest; /*declare a template pointer point to dest position*/
20
21
22 if (dest == NULL || src == NULL) { /*if the dest or src NULL error!*/
23 printf("the argument is error !\n");
24 return NULL;
25 }
26
27 while (*dest++ = *src++) /*copy src to dest*/
28 ;
29
30 return ptr;

[此贴子已经被作者于2008-11-13 16:12:52编辑过]