Help me in solving LJAJAG21 problem

help
,
1

My issue

please provide solution

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
    temp=a;
    a=b;
    b=temp;
    
    printf("Value of a is:%d and Value of b is:%d",a,b);
    
	//swapping without using third variable 
    a=
    
    
    
}

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