c - 如何比较C中指向字符串的指针

Question

如何在 C 中比较两个字符串？帮帮我，我是初学者@@

char *str1 = "hello";
char *str2 = "world";
//compare str1 and str2 ?

Answer 1

您可能想使用 strcmp :

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

int main(int argc, char **argv)
{
    int v;
    const char *str1 = "hello";
    const char *str2 = "world";

    v = strcmp(str1, str2);

    if (v < 0)
        printf("'%s' is less than '%s'.\n", str1, str2);
    else if (v == 0)
        printf("'%s' equals '%s'.\n", str1, str2);
    else if (v > 0)
        printf("'%s' is greater than '%s'.\n", str1, str2);

    return 0;
}

结果:

'hello' is less than 'world'.