Thread: strncmp how to?

Originally Posted by ridgerunnersjw

Trying to use the following unsuccessfully...This is the argument for an if statement....if 0 do ....Can someone tell me what I may be doing wrong here as I never enter it....*p = "ER_CMD#P?"

Code:

(!(strncmp(*p, "ER_CMD", 6)))

You need to post a bit more. This looks suspicious as strcncmp takes two pointers. If p is a char ** it is correct, but then what is p pointing to? It's probably set up incorectly and p needs to be a plain char *.

what I may be doing wrong here

*p

Code:

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

int main() {
    
    char *string1 = "test";

    if ( !strncmp(string1, "test", strlen(string1)) ) {
        printf("equal.");
    } else {
        printf("unequal!");
    }

    return 0;
}

C library function - strncmp() - Tutorialspoint