Python Program That Uses Of a Function To Add Two Numbers

Reading Time: 4 minutes

Introduction:

This Python program demonstrates the use of a function to add two numbers based on user input. The program defines a function add_numbers(a, b) that takes two parameters and returns their sum. It then prompts the user to input two numbers, converts them to floating-point values, and calls the add_numbers function to calculate their sum. Finally, the program displays the result on the console.

Algorithm:

Define a function add_numbers(a, b) that takes two parameters a and b.
Inside the function, calculate and return the sum of a and b using the +
Prompt the user to enter the first number and store it in the variable num1.
Prompt the user to enter the second number and store it in the variable num2.
Convert both num1 and num2 to floating-point values using float().
Call the add_numbers function with num1 and num2 as arguments and store the result in the variable result.
Display the result with a descriptive message, e.g., “Sum: <result>”.

Python Code:

				
					def add_numbers(a, b):
    return a + b
# Get user input
num1 = float(input("Enter the first number: "))
num2 = float(input("Enter the second number: "))
# Call the function and display the result
result = add_numbers(num1, num2)
print("Sum:", result)

Input :

				
					Enter the first number: 5
Enter the second number: 6

Output :

				
					Sum: 11.0

Explanation:

The program begins by defining the add_numbers function, which accepts two parameters a and b, and returns their sum using the + operator.
The program then prompts the user to input the first and second numbers, which are stored in the variables num1 and num2 respectively.
The float() function is used to convert the user input to floating-point numbers, allowing decimal values to be entered.
The add_numbers function is called with num1 and num2 as arguments, and the result is stored in the variable result.
Finally, the program displays the sum of the two numbers by printing “Sum: “ followed by the value of the result variable.

This program showcases the use of a simple function to perform a specific task (addition) and demonstrates how user input can be obtained, processed, and utilized to perform calculations.