Pseudocode for Swapping Two Variables – Programming Code Examples
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Pseudocode for Swapping Two Variables2 min read

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In this pseudocode we will swap the values of two variables using a temporary variable. Here, Let’s learn how to swap values of two integer variables.

Pseudocode Swap to Numbers with Entered by the User

First example, swap two variables without taking value from user.

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BEGIN
 
#define variables and assing values to variables
NUMBER num1=10, num2=15, temp
 
#assign num1 to temp
temp=num1
 
#assing num2 to num1
num1=num2
 
#assign temp to num2
num2=temp
 
OUTPUT "number 1:"+num1
OUTPUT "number 2:"+num2
 
END
 




FlowChart:

Flowchart of pseudocode to swap to variables

Flowchart of pseudocode to swap to variables

 

Java Code:

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    public static void main(String[] args) {
        float first = 2.2f, second = 10.4f;
 
        System.out.println("--Before swap--");
        System.out.println("First number = " + first);
        System.out.println("Second number = " + second);
 
        first = first - second;
        second = first + second;
        first = second - first;
 
        System.out.println("--After swap--");
        System.out.println("First number = " + first);
        System.out.println("Second number = " + second);
    }
 

Pseudocode Swap to Numbers without Entered by the User

Second example, swap two variables with taking value from user.

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BEGIN
 
#define variables and assing values to variables
NUMBER num1, num2, temp
 
#take numbers from user
INPUT num1
INPUT num2
 
#assign num1 to temp
temp=num1
 
#assing num2 to num1
num1=num2
 
#assign temp to num2
num2=temp2
 
PRINT "number 1:"+num1
PRINT "number 2:"+num2
 
END
 

C++ Code: Write a program to swap two numbers in C++

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using namespace std;
#include<iostream>
int main()
{
   int a,b,temp;
   cout<<"Enter the value of a: ";
   cin>>a;
   cout<<"Enter the value of b : ";
   cin>>b;
   temp = a;
   a = b;
   b = temp;
   cout<<"a :  "<<a<<endl;
   cout<<"b :  "<<b<<endl;
   cout << "Press a key to continue ..." << endl;
   cin.ignore();
   cin.get();
   return EXIT_SUCCESS;
}
 

Python Code:Write a program to swap two numbers in Python

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# Python program to swap two variables
# To take input from the user
x = input('Enter value of x: ')
y = input('Enter value of y: ')
# create a temporary variable and swap the values
temp = x
x = y
y = temp
print('The value of x after swapping: {}'.format(x))
print('The value of y after swapping: {}'.format(y))
 

In this example you have learned how to swap to variables using third variable with pseudoce code and programming codes.

 

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