Day 46: Python Program to Swap Two Numbers Without Using The Third Variable

 

def swap_numbers(a, b):

    a = a + b

    b = a - b

    a = a - b

    return a, b

a = int(input("Enter the first number: "))

b = int(input("Enter the second number: "))

a, b = swap_numbers(a, b)

print(f"After swapping: First number = {a} and Second number = {b}")

#source code --> clcoding.com 

Code Explanation:

Function: swap_numbers

def swap_numbers(a, b):

    a = a + b

    b = a - b

    a = a - b

    return a, b

Purpose: This function swaps the values of a and b using arithmetic operations.

Process:

a = a + b: The sum of a and b is stored in a.

b = a - b: The new value of b becomes the original value of a.

a = a - b: The new value of a becomes the original value of b.

Return Value: The function returns the swapped values of a and b.

a = int(input("Enter the first number: "))

b = int(input("Enter the second number: "))

Input:

Prompts the user to enter two integers (a and b).

Converts the inputs into integers using int().

a, b = swap_numbers(a, b)

Function Call: Passes the user-provided values of a and b to the swap_numbers function.

Result: After the function executes, the values of a and b are swapped.

print(f"After swapping: First number = {a} and Second number = {b}")

Output: 

Prints the swapped values of a and b.