Help me in solving RCPITCP13 problem

My issue

how to solve this code

My code

#include <stdio.h>

int main() {
    int area;
    char length = 11;
    char breadth = 13;

    // Add the formula for area of 11 and 13
    printf("%d\n", area = length * breadth);

    // Add the formula for perimeter of 11 and 13
    printf("%d\n", 2 * length + breadth);
}

Learning course: Learn C Programming
Problem Link: https://www.codechef.com/learn/course/rcpit-programming-c/RCPITLPC02/problems/RCPITCP13