# Title: Shapes Program
# Author: Varun Merai
# Date: 3/06/2025
# Version: Version 1 - first version, Version 1.1 - minor revisions, Version 2 - major revisions
# Purpose: Lets the user calculate the area and perimeter of a shape

import math

print('Welcome to the perimeter and area calculator program')
print('This program will calculate the perimeter and area of a shape... let\'s begin!')

while True:
    shape = input('\nEnter "s" for square, "r" for rectangle, or "c" for circle: ')

    if shape == "s":
        print('You have selected Square')
        length = float(input('What is the length? '))
        perimeter = 4 * length
        area = length ** 2
        print(f'The perimeter of the square is {perimeter:.2f}')
        print(f'The area of the square is {area:.2f}')

    elif shape == "r":
        print('You have selected Rectangle')
        length = float(input('What is the length? '))
        width = float(input('What is the width? '))
        perimeter = 2 * (length + width)
        area = length * width
        print(f'The perimeter of the rectangle is {perimeter:.2f}')
        print(f'The area of the rectangle is {area:.2f}')

    elif shape == "c":
        print('You have selected Circle')
        radius = float(input('What is the radius? '))
        circumference = 2 * math.pi * radius
        area = math.pi * radius ** 2
        print(f'The circumference of the circle is {circumference:.2f}')
        print(f'The area of the circle is {area:.2f}')

    else:
        print('Please select one of these: "s" for square, "r" for rectangle, or "c" for circle.')

    choice = input("\nRun again? (y/n): ")
    if choice != 'y':
        print('The program has ended.')
        break