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

Problem :- Write A C++ Program To Swap Two Numbers Without Using Third Variable Using Functions .

Logic :- For This question We Have 3 Method to Swap Without Using third variable .

1. Plus/Minus

2. Multiply/Divide

3. Bitwise Operator 

All Methods are follow you also can check C++ Program To Swap Two Numbers Using Functions .

Solution :-

Method 1 :- Plus/Minus

#include<iostream>

using namespace std;

void swpa(int ,int );

int main()

{

    //By-Ghanendra Yadav

    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;

}

Method 2 :- Multiply/Divide

#include<iostream>

using namespace std;

void swpa(int ,int );

int main()

{

    //By-Ghanendra Yadav

    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;

}

Method 3 :- Bitwise Operator

#include<iostream>

using namespace std;

void swpa(int ,int );

int main()

{

    //By-Ghanendra Yadav

    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:-

Method 1 :- Plus/Minus

Method 2 :- Multiply/Divide

Method 3 :- Bitwise Operator