# Lab 5 - Exercise 2 - Problem (Exploration Exercise) 4
#
# Let’s now create a function by encapsulating (this word is defined in Chapter 4
# of our online textbook) the code that draws one square into a function.
# Let’s make our function such that it does not take any parameters (yet) and it
# does not return anything. Let’s modify the main part of our program such that it
# call this function 3 times, i.e., still produces the black squares illustrated above. 
#
# Anne Lavergne
# March 2017

import turtle as t  

def square( ):
    for each in range(4):
        t.forward(50)
        t.right(90)
    return


# MAIN part of program - Top Level
t.setup(width=600, height=500)
t.pencolor('black')
t.penup()
t.goto(-75,40)
t.pendown()

# Square 1
square( )

t.penup()
t.forward(90)
t.pendown()

# Square 2
square( )

t.penup()
t.forward(90)
t.pendown()

# Square 3
square( )