Help me in solving RCPITCP43 problem

My issue

slove the problem

My code

#include <stdio.h>

int main() {
	// your code goes here
	// Declare two variable
	int a=21 ; // First number
	 int b=40; // second number
	 //Calculate the sum of a and b
	 int sum=a + b;
	 // print the result
     printf("The sum of %d and %d is %d\n", a,b , sum);
     return 0;// exit programme
     
}


Learning course: Learn C Programming
Problem Link: https://www.codechef.com/learn/course/rcpit-programming-c/RCPITLPC08/problems/RCPITCP43