浅析memcmp 和 strcmp

eg:

#include <stdio.h>
#include <string.h> 

int main(void)
{
    char string[7] = "ABCDEFG";
    char copy[4] = "ABCD";
    int ret;           

    ret = memcmp(string,copy,7);
    printf("the ret is %d\n",ret);

    ret = strcmp(string,copy);
    printf("the ret is %d\n",ret);
    return 0;
}

显而易见！