'''
file: my_program.py
Interactive program that asks user to compute the area of a rectangle.
Mithat Konar
'''

import my_functions

# Function definition(s)
def say_hello():
    '''Welcome the user to the program.'''
    greeting = 'This program will compute the area of a rectangle.'
    print(greeting)

# "__main__"
say_hello()

# get data from the user
w = float(input('Enter the width of a rectangle: '))
h = float(input('Enter the height of a rectangle: '))

# compute results
area = my_functions.rectangle_area(w, h)

# output results
print(f'The area of a {w} by {h} rectangle is {area}.')