#include<iostream>
using namespace std;

void myswap(int &x,int &y){



    int temp = x;
    x = y;
    y = temp;

}

int main(){

   int a = 7;
   int b = 5;
   cout<<"Before swapping in main"<<endl;
   cout<<a<<" "<<b<<endl;

   myswap(a,b);

    cout<<"after swapping in main"<<endl;
   cout<<a<< " "<<b<<endl;

}