函数名: strcmp
头文件: <string.h>
函数原型: int strcmp(const char *str1,const char *str2);
功 能: 比较两个字符串的大小,区分大小写
参 数: str1和str2为要比较的字符串
返回值: str1 > str2 , 返回 1;
str1 < str2 , 返回 -1;
str1 == str2 , 返回 0;
程序例: 比较两个字符串的大小,并输出结果
#include <string.h> #include <stdio.h> int main(void) { char *buf1 = "aaa", *buf2 = "bbb", *buf3 = "ccc"; int ptr = strcmp(buf2, buf1); if (ptr > 0) { printf("buffer 2 is greater than buffer 1\n"); }else if(ptr < 0){ printf("buffer 2 is less than buffer 1\n"); }else{ printf("buffer 2 is equals buffer 1\n"); } ptr = strcmp(buf2, buf3); if (ptr > 0) { printf("buffer 2 is greater than buffer 3\n"); }else if(ptr < 0){ printf("buffer 2 is less than buffer 3\n"); }else{ printf("buffer 2 is equals buffer 3\n"); } return 0; }
运行结果:
buffer 2 is greater than buffer 1 buffer 2 is less than buffer 3
本文固定URL:https://www.dotcpp.com/course/581