自己实现strcpy

/* printf example */
#include <stdio.h>

char* my_strcpy(char* des,const char* src){
char *ret=des;
while(*src!='\0'){
*des++=*src++;
}
*des=*src;
return ret;
}

int main()
{
char des[]="#######";
char src[]="add222";
printf("%s,%s",my_strcpy(des,src),des);
return 0;
}