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;
}

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";
}

Output

enter two numbers

3

4

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

1. calculate the bill
2. character is small, capital or a special character
3. a number is even or odd
4. 0 is a positive or negative number
5. a positive and negative number
6. Enter Range of numbers and replaced them
7. a greater number among three numbers
8. Armstrong Number
9. ASCII code 
10. Find the Maximum value program in C++ (C Plus Plus).
11. maximum number
12. Maximum Number between two numbers 
13. Student Grade
14. the number is divisible by 11 or 5 or not
15. Triangle 
16. a triangle is an equilateral, isosceles or scalene
17. Leap year 
18. character is an alphabet or not
19. Grade Percentage
20. character is an alphabet, digit, or special character
21. character is an uppercase or lowercase.
22. Weekdays
23. a prime or composite number
24. hours and minutes as  AM or PM
25. swap the values of two numbers
26. update even to odd
27. Profit Loss
28. centimeter into meter and kilometer 
29. Triangle 
30. Salary
31. Even odd with goto statement.
32. area of the circle