Program to interchange the values of two numbers: (a)w/o 3rd variable (b)with 3rd variable

a.Without 3rd Variable

#include<iostream>

using namespace std;

int main()

{

   int a,b;

   cout<<"Enter the value of a\n";

   cin>>a;

   cout<<"Enter the value of b\n";

   cin>>b;

   cout<<"value of a and b before swap is :\nA = "<<a<<endl<<"B = "<<b<<endl;

   b=a+b;

   a=b-a;

   b=b-a;

   cout<<"value of a and b after swap is :\nA = "<<a<<endl<<"B = "<<b<<endl;

   cout<<"/*\nName-Sanjampreet Singh\nRoll Number-1507967\n*/";

}

b.With 3rd Variable

#include<iostream>

using namespace std;

int main()

{

   int a,b,temp;

   cout<<"Enter the value of a\n";

   cin>>a;

   cout<<"Enter the value of b\n";

   cin>>b;

   cout<<"value of a and b before swap is :\nA = "<<a<<endl<<"B = "<<b<<endl;

   temp=b;

   b=a; 

  a=temp;

   cout<<"value of a and b after swap is :\nA = "<<a<<endl<<"B = "<<b<<endl;

   cout<<"/*\nName-Sanjampreet Singh\nRoll Number-1507967\n*/";

}

*Output:

*Note: Output would be same for both