ECS Functions

from tkinter import *
import tkinter.simpledialog
import tkinter.messagebox

root = Tk()
w = Label(root, text="Functions")
w.pack()

#functions are defined below:
def sayhello():
    tkinter.messagebox.showinfo("sayHello", "Hello")

def saywelcome(name1, name2):
    tkinter.messagebox.showinfo("sayWelcome", "Welcome " + name1 + " and " + name2)

def square(num):
    answer = num * num
    return answer

#The code starts running here.  This is where the methods are actually called:
sayhello()
saywelcome("Alicia", "Camille")
squared = square(4)
tkinter.messagebox.showinfo("square", "4 squared is " + str(squared))


# Run the program and answer the questions below:
#
# 1. What does the function sayhello() do?
#
# 2. What does the function saywelcome() do?
#
# 3. What does the function square() do?
#
#
#  Arguments are the things passed in ()'s.  For example, in the line:
#  squared = square(4)
#  4 is the argument to the method square
#
# 4. How many arguments does sayhello() take?
#
# 5. How many arguments does saywelcome() take?
#
#
#  Functions may return information using the return statement.
#
# 6. What is returned from printwelcome()?
#
# 7. What is returned from square()?
#
# 8. Write your own function called cube().  It would be very similar to
#    square but it would multiply the number times itself three times.
#    Add some code to test it.
#
# 9. Extra Credit: Write your own function called area that takes one
#    argument called radius.  It should find the area of a circle and return it.
#   A = 3.14*r^2
#