#a. Title: Multiplication Math Quiz
#b. Author: Davi Barbosa
#c. Date: 26/05/2026
#d. Version: 2
#e. Purpose: To test the users multiplication skills

##Start screen, Ask question, Get answer, Check answer, update score, increase difficulty, Repeat, Show final percentage, End or restart

import random


def get_yes_no(question):
    while True:
        answer = input(question).lower()

        if answer in ("yes", "y"):
            return True

        elif answer in ("no", "n"):
            return False

        else:
            print("Invalid input. Please enter yes or no.")


def play_game():

    score = 0

    question_count = 1

    difficulty = 1

    results_list = []

##Welcome user and get username

    print('Hello and welcome to the Multiplication Math Quiz.')
    print('You will answer question on this topic that will get harder as you go')
    print('Answer your Math questions with numbers!')
   
    username = input('What name would you like to be called by? ')
   
    print(f'Good luck, {username}!')

    while question_count < 11:

##Generates the each number in the question for each difficulty level

        if difficulty == 1:
            num1 = random.randint(1,10)
            num2 = random.randint(1,10)

        elif difficulty == 2:
            num1 = random.randint(5,10)
            num2 = random.randint(11,15)

        else:
            num1 = random.randint(11,20)
            num2 = random.randint(10,15)

##Ask the math question
            
        while True:
            try:
                user_answer = int(input(f'{question_count} What is {num1} x {num2}? '))

                if user_answer < 1 or user_answer > 400:
                    print('Please enter a number between 1 and 400.')
                else:
                    break
                
            except ValueError:
                print('Please enter a whole number')

##Check answer

        correct_answer = num1 * num2

        if correct_answer == user_answer:
            result = 'Correct!'
            print(result)
            score += 1

        else:
            result = 'Incorrect!'
            print(f'{result} The correct answer is {correct_answer}')
            

        results_list.append(f'{question_count} {result}')
        
        question_count += 1

##Set difficulty for certain scores

        if score <= 3:
            difficulty = 1

        elif score <= 6:
            difficulty = 2

        else:
            difficulty = 3
           
##Show score and difficulty
    
        print(f'Score = {score} / {question_count}')
        print(f'Current difficulty: {difficulty}')
        print()
        
##Final percentage
       
    percentage = (score / 10) * 100

    print(f'Final percentage = {percentage}%!')

    # return username

#Ask if the user wants to see their history

    if get_yes_no("Do you want to see your quiz results? (yes/no) "):
        print(*results_list, sep="\n")

##Restart loop

while True:

    username = play_game()

    if get_yes_no("Nice work, would you like to play again? (yes/no) "):
        continue
    else:
        print(f"Thanks for playing {username}")
        break