# circle_area_sln.py
# Author: Your Name Here
# This program computes the area and circumference of a
# circle

#Global variables - have global scope - shared by all functions
radius = 0 # the radius of the circle
area = 0 #the area
circumference = 0 # the cicumference

#The main function of the program
def main():
    #Get radius from the user:
    get_radius()

    #Compute the area
    compute_area()

    #Compute the circumference
    compute_circumference()
    
    #print the results
    print_results
    
#This function gets radius from the user:
def get_radius():
    
#This function computes the area
def compute_area():

#This function computes the area
def compute_circumference():

#This function displays the area and circumferece
def display_result():
    
#start the program
main()