Help me in solving LJAJAG21 problem

help
,
1

My issue

Why it has been failing in hidden test case

My code

#include <stdio.h>

int main() {
    // your code goes here
    int a, b, temp;
    scanf("%d %d", & a, & b);

    // swapping with using third variable




    //swapping without using third variable 




}

Learning course: Learn C Programming
Problem Link: https://www.codechef.com/learn/course/rcpit-programming-c/RCPITLPC07/problems/LJAJAG21