C语言比较字符数组是否为0

1.char tmp[16]={0};

2.对tmp数组进行赋值

3.判断

    if(strncmp(tmp,"0",1)!=0) {

        printf("in if.\n");

        return -1;

    }

 

#include 
#include 
int main() {
    printf("hello world!\n");
    char tmp[16]={0};
    strcpy(tmp, "0");
        if(strncmp(tmp,"0",1)==0) {
        printf("in if.\n");
        return -1;
    }
    return 0;
}