Question

C语言中,strcmp( )是什么函数?

Answer 1

字符串比较函数,两个字符串,从第一个字符开始比,如果相同,继续向下比,如果不同,看这两个字符的ASCII码,如果第一个字符串的比较大,则返回1,否则返回-1;

Answer 2

函数名: strcmp
功 能: 串比较
用 法: int strcmp(char *str1, char *str2);
程序例:

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

int main(void)
{
char *buf1 = "aaa", *buf2 = "bbb", *buf3 = "ccc";
int ptr;

ptr = strcmp(buf2, buf1);
if (ptr > 0)
printf("buffer 2 is greater than buffer 1\n");
else
printf("buffer 2 is less than buffer 1\n");

ptr = strcmp(buf2, buf3);
if (ptr > 0)
printf("buffer 2 is greater than buffer 3\n");
else
printf("buffer 2 is less than buffer 3\n");

return 0;
}

Answer 3

字符串比较函数