Exercise 05-22:
Write a program that displays a list of options (menu): addition, subtraction, division, multiplication, and exit. Print the multiplication table for the chosen operation. Repeat until the exit option is chosen.
Answer:
##############################################################################
# Python From Scratch
# Author: Nilo Ney Coutinho Menezes
# Editora Novatec (c) 2010-2025 - LogiKraft 2025
# Site: https://pythonfromscratch.com
# ISBN: 978-85-7522-949-1 (Paperback), 978-85-7522-950-7 (hardcover), 978-85-7522-951-4 (ebook)
#
# File: chapter 05/exercise-05-22.py.py
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while True:
print(
"""
Menu
----
1 - Addition
2 - Subtraction
3 - Division
4 - Multiplication
5 - Exit
"""
)
option = int(input("Choose an option:"))
if option == 5:
break
elif option >= 1 and option < 5:
n = int(input("Multiplication table of:"))
x = 1
while x <= 10:
if option == 1:
print(f"{n} + {x} = {n + x}")
elif option == 2:
print(f"{n} - {x} = {n - x}")
elif option == 3:
print(f"{n} / {x} = {n / x:5.4f}")
elif option == 4:
print(f"{n} x {x} = {n * x}")
x = x + 1
else:
print("Invalid option!")