Help me in solving RCPITCP44 problem

My issue

Using an assignment operator, output the remainder when length is divided by 3.

My code

#include <stdio.h>

int main() {
    int length = 11;   // Initialize length with 11
    int remainder;

    // Using the assignment operator to store the remainder
    remainder = length % 3;

    // Output the result
    printf(" 3 remainder %d\n", remainder);

    return 0;
}

Learning course: Learn C Programming
Problem Link: https://www.codechef.com/learn/course/rcpit-programming-c/RCPITLPC08/problems/RCPITCP44