Returns 1 if string c occurs at the end of string s

strend.c

#include <stdio.h>

int mystrend(char *s, char *c) {
    int sLen = 0;
    int cLen = 0;

    while (*s != '\0') {
        s++, sLen++;
    }

    while (*c != '\0') {
        c++, cLen++;
    }

    if (cLen > sLen) {
        return 0;
    }

    while (*s == *c) {
        if (cLen == 0) {
            return 1;
        }

        s--, c--, cLen--;
    }
    
    /* 
        Or, we could write this while loop as a for loop and save 2 lines...
        
        for (; *s == *c; s--, c--, cLen--) {
            if (cLen == 0) {
                return 1;
            }
        }
    */

    return 0;
}

int main() {
    printf("%d\n", mystrend("abcd", "bd"));
}