journal

def addition(a, b):
    """Perform addition of two numbers."""
    return a + b

def subtraction(a, b):
    """Perform subtraction of two numbers."""
    return a - b

def multiplication(a, b):
    """Perform multiplication of two numbers."""
    return a * b

def division(a, b):
    """Perform division of two numbers."""
    if b == 0:
        return "Error: Division by zero is not allowed."
    return a / b

def display_menu():
    """Display the menu of options to the user."""
    print("\nSimple Calculator Menu")
    print("1. Addition")
    print("2. Subtraction")
    print("3. Multiplication")
    print("4. Division")
    print("5. Exit")

def get_user_choice():
    """Get the user's choice from the menu."""
    while True:
        try:
            choice = int(input("Enter your choice (1-5): "))
            if 1 <= choice <= 5:
                return choice
            else:
                print("Invalid choice. Please enter a number between 1 and 5.")
        except ValueError:
            print("Invalid input. Please enter a number between 1 and 5.")

def get_numbers():
    """Get two numbers from the user for arithmetic operations."""
    while True:
        try:
            num1 = int(input("Enter the first number (integer): "))
            num2 = float(input("Enter the second number (float): "))
            return num1, num2
        except ValueError:
            print("Invalid input. Please enter a valid integer and float.")

def main():
    """Main function to run the calculator program."""
    while True:
        display_menu()
        choice = get_user_choice()

        if choice == 5:
            print("Exiting the program.")
            break

        num1, num2 = get_numbers()

        if choice == 1:
            result = addition(num1, num2)
        elif choice == 2:
            result = subtraction(num1, num2)
        elif choice == 3:
            result = multiplication(num1, num2)
        elif choice == 4:
            result = division(num1, num2)

        print(f"The result is: {result}")

if __name__ == "__main__":
    main()