C++ Program To Swap Two Numbers Without Using Third Variable

Bitwise Operator

#include<iostream>
using namespace std;
void swpa(int ,int );

int main()
{

    int a,b;
    
 cout<<"Enter Two Number You Want To Swap :\n";
    cin>>a>>b;
    
 cout<<"\nAfter Swapping Numbers Are Given below\n\n";
    swap(a,b);
 
    cout<<a<<"\t"<<b<<" \n";
    return 0;
}
void swap(int x,int y)
{
 //without using third variable
 x=x^y;
 y=x^y;
 x=x^y;
}

Output:

Enter Two Number You Want To Swap :

10000

20000

After Swapping Numbers Are Given below

20000 10000 

Multiply/Divide

#include<iostream>
using namespace std;
void swpa(int ,int );

int main()
{
 
    int a,b;
    
 cout<<"Enter Two Number You Want To Swap :\n";
    cin>>a>>b;
    
 cout<<"\nAfter Swapping Numbers Are Given below\n\n";
    swap(a,b);
 
    cout<<a<<"\t"<<b<<" \n";
    return 0;
}
void swap(int x,int y)
{
 //without using third variable
 x=x*y;
 y=x/y;
 x=x/y;
}

Output:

Enter Two Number You Want To Swap :

1000 2000

After Swapping Numbers Are Given below

2000 1000 

 Plus/Minus

#include<iostream>
using namespace std;
void swpa(int ,int );

int main()
{
 
    int a,b;
    
 cout<<"Enter Two Number You Want To Swap :\n";
    cin>>a>>b;
    
 cout<<"\nAfter Swapping Numbers Are Given below\n\n";
    swap(a,b);
 
    cout<<a<<"\t"<<b<<" \n";
    return 0;
}
void swap(int x,int y)
{
 //without using third variable
 x=x+y;
 y=x-y;
 x=x-y;
}

Output:

Enter Two Number You Want To Swap :

100 200

After Swapping Numbers Are Given below

200 100