Question

Exercise: Complete the program that performs basic arithmetic operations of two input numbers. The program displays a menu for user to select a desired operation. ===== MAIN MENU ===== 1. Addition 2. Subtraction 3. Exit Select an operation (1-3): 1 Enter two numbers: 12 20 12 + 20 - 32 - MAIN MENU 1. Addition 2. Subtraction 3. Exit Select an operation (1-3): 2 Enter two numbers: 12 20 12 - 10 = 2 MAIN MENU - 1. Addition 2. Subtraction 3. Exit Select an operation (1-3): 3 Bye!!!

in python and use while loop

Answer 1

Program:

# Menu display
print("===== MAIN MENU =====")
print("1. Addition")
print("2. Subtraction")
print("3. Exit")
print("\n")
# Read input for menu option from user
menu = int(input("Select an operation (1-3): "))

# Loop iterates till the menu is not equal to 3
while menu != 3:
    # Reading two number input from user
    num1, num2 = map(int, input("Enter two numbers: ").split())
    # Condition to check for addition option
    if menu == 1:
        # Printing the addition of given two numbers
        print(num1,"+",num2,"=",num1+num2)
    # Condition to check for subtraction option
    elif menu ==2:
        # Printing the subtraction of given two numbers
        print(num1,"-",num2,"=",num1-num2)
    print("\n")
    # Printing menu
    print("===== MAIN MENU =====")
    print("1. Addition")
    print("2. Subtraction")
    print("3. Exit")
    print("\n")
    # Read menu selection from user
    menu = int(input("Select an operation (1-3): "))

# If user wants to exit
if menu == 3:
    # Print Bye as output
    print("Bye!!!")

Output:

MAIN MENU 1. Addition 2. Subtraction 3. Exit Select an operation (1-3): 1 Enter two numbers: 12 20 12 + 20 = 32 MAIN MENU 1. Addition 2. Subtraction 3. Exit Select an operation (1-3): 2 Enter two numbers: 12 10 12 10 = 2

MAIN MENU 1. Addition 2. Subtraction 3. Exit Select an operation (1-3): 3 Bye!!!