#########
# Assignment #K
###########
# functions

def scat(value_to_square):
    return value_to_square **2

def circum(radius):
    return 3.1417 * 2 * radius

def circarea(radius):
    return 3.1417*scat(radius)

def recarea(height,width):
    return height * width


#### main #####
# Get user input for later calculations

a = input("Please enter a number ")

b = input("And another number ")

# Note that NO error checking is done to make sure a and b are numbers.
# In a real program, this should be done

# Give the user a menu of actions to choose from
quit = 1

# Allow user to make multiple choices with a loop
while quit == 1:
    print "Please choose the number corresponding to your choice : "
    print " 1 - Calculate area of circle with radius of b"
    print " 2 - Calculate circumference of circle with radius b"
    print " 3 - Calculate area of rectangle with sides a and b "
    print " 4 - Calculate area of square with sides of a"
    print " 5 - End "
    choice = input("Enter your choice: ")
    
    # Handle the user's choice and handle invalid input    
    
    if choice == 1:
        print "The area of a circle with radius ",b," is ", circarea(b)
    elif choice == 2:
        print "The circumference of a circle with radius ",b, " is ", circum(b)
    elif choice == 3:
        print "The area of a rectangle with sides of ", a, " and ",b, " is ", recarea(a,b)
    elif choice == 4:
        print "The area of a square with sides of ",a," is ", scat(a)
    elif choice == 5:
        quit = 0
    else:
        print "That was not a valid choice"
    print
        
# Print a final message for the user
print "Thank you"