# ************************                                                         
** A Simple Math Quiz **                                                         
************************                                                         
1. Addition                                                                      
2. Subtraction                                                                   
3. Multiplication                                                                
4. Integer Division                                                              
5. Exit                                                                          
------------------------                                                         
Enter your choice: 1                                                             
Enter your answer                                                                
6 + 5 = 11                                                                       
Correct.                                                                         
Enter your choice: 5                                                             
Exit the quiz.                                                                   
------------------------                                                         
You answered 1 questions with 1 correct.                                         
Your score is 100.0%. Thank you.

import random  
#https://gist.github.com/cwil323/9b1bfd25523f75d361879adfed550be2  
  
def display_intro():  
    title = "** A Simple Math Quiz **"  
    print("*" * len(title))  
    print(title)  
    print("*" * len(title))  
  
  
def display_menu():  
    menu_list = ["1. Addition", "2. Subtraction", "3. Multiplication", "4. Integer Division", "5. Exit"]  
    print(menu_list[0])  
    print(menu_list[1])  
    print(menu_list[2])  
    print(menu_list[3])  
    print(menu_list[4])  
  
  
def display_separator():  
    print("-" * 24)  
  
  
def get_user_input():  
    user_input = int(input("Enter your choice: "))  
    while user_input > 5 or user_input <= 0:  
        print("Invalid menu option.")  
        user_input = int(input("Please try again: "))  
    else:  
        return user_input  
  
  
def get_user_solution(problem):  
    print("Enter your answer")  
    print(problem, end="")  
    result = int(input(" = "))  
    return result  
  
  
def check_solution(user_solution, solution, count):  
    if user_solution == solution:  
        count = count + 1  
        print("Correct.")  
        return count  
    else:  
        print("Incorrect.")  
        return count  
  
  
def menu_option(index, count):  
    number_one = random.randrange(1, 21)  
    number_two = random.randrange(1, 21)  
    if index is 1:  
        problem = str(number_one) + " + " + str(number_two)  
        solution = number_one + number_two  
        user_solution = get_user_solution(problem)  
        count = check_solution(user_solution, solution, count)  
        return count  
    elif index is 2:  
        problem = str(number_one) + " - " + str(number_two)  
        solution = number_one - number_two  
        user_solution = get_user_solution(problem)  
        count = check_solution(user_solution, solution, count)  
        return count  
    elif index is 3:  
        problem = str(number_one) + " * " + str(number_two)  
        solution = number_one * number_two  
        user_solution = get_user_solution(problem)  
        count = check_solution(user_solution, solution, count)  
        return count  
    else:  
        problem = str(number_one) + " // " + str(number_two)  
        solution = number_one // number_two  
        user_solution = get_user_solution(problem)  
        count = check_solution(user_solution, solution, count)  
        return count  
  
  
def display_result(total, correct):  
    if total > 0:  
        result = correct / total  
        percentage = round((result * 100), 2)  
    if total == 0:  
        percentage = 0  
    print("You answered", total, "questions with", correct, "correct.")  
    print("Your score is ", percentage, "%. Thank you.", sep = "")  
  
  
def main():  
    display_intro()  
    display_menu()  
    display_separator()  
  
    option = get_user_input()  
    total = 0  
    correct = 0  
    while option != 5:  
        total = total + 1  
        correct = menu_option(option, correct)  
        option = get_user_input()  
  
    print("Exit the quiz.")  
    display_separator()  
    display_result(total, correct)  
  
main()