Write a C++ program to swap the values of two numbers using if else statement

Write a C++ program to swap the values of two number if values of both variables are not the same using if-else statement

e.g

before swapping a=5; b=6

after swapping a=6, b=5

Write a C++ program to swap the values of two numbers using if else statement

// C++ program to swap two numbers using 3rd variable
#include <bits/stdc++.h>
using namespace std;
int main()
{
	int a = 2, b = 3;

	cout << "Before swapping a = " << a << " , b = " << b
		<< endl;
	// temporary variable
	int temp;
	// appying swapping algorithm
	temp = a;
	a = b;
	b = temp;
	cout << "After swapping a = " << a << " , b = " << b
		<< endl;
	return 0;
}

// C++ program to swap two numbers using 3rd variable

#include <bits/stdc++.h>

using namespace std;

int main()

{

int a = 2, b = 3;

cout << "Before swapping a = " << a << " , b = " << b

<< endl;

// temporary variable

int temp;

// appying swapping algorithm

temp = a;

a = b;

b = temp;

cout << "After swapping a = " << a << " , b = " << b

<< endl;

return 0;

}

Flowchart of the program to swap the values of two number without third variable using if-else statement

C++ Source code of swapping the values of two variables by the using the if-else statement

#include<iostream>
using namespace std;
int main ()
{
	int a,b;
	cout<<"enter two numbers"<<endl;
	cin>>a>>b;
	if(a!=b)
{
a=a+b;
b=a-b;
a=a-b;
cout<< "After swapping the values,"<<"value of a is:"<<a<<"and value of b is:"<<b;
}
else
cout<<"two number are equal";
}

#include<iostream>

using namespace std;

int main ()

{

int a,b;

cout<<"enter two numbers"<<endl;

cin>>a>>b;

if(a!=b)

{

a=a+b;

b=a-b;

a=a-b;

cout<< "After swapping the values,"<<"value of a is:"<<a<<"and value of b is:"<<b;

}

else

cout<<"two number are equal";

}

Output

enter two numbers

After swapping the values, Value of a is: 4 and Value of b is:3

SFT (Shamil’s Flow Table )

Are you interested to Read about SFT(Shamil’s Flow Table)?

C++ Exercise | If else Statement