Question

Edit: Changed title to reflect both methods in post.

I’m trying to compare two strings in c language as below but for some reason it’s always printing that both strings are not equal

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


int main()
{
    /* A nice long string */

    char test[30]="hellow world";

    char test2[30];

    // to copy string from first array to second array

    strcpy(test2, test);



    /* now comparing two stering*/

    if(strcmp(test2, test))
       printf("strigs are equal  ");
    else

    printf("not equal  \n");

    printf("value of first string  is %s and second string is %s",test,test2);
    printf("length of string1 is %zu and other string is %zu ",strlen(test2),strlen(test2));



}

I’m always getting output as

not equal  
value of first string  is hellow world and second string is hellow worldlength of string1 is 12 and other string is 12 

Answer 1

Your problem is with how you’re using strcmp. strcmp returns 0 (which evaluates as false) when the strings are equal (and returns a positive number when the strings are “in order” and a negative number when they’re “out of order”).