Question

1. Design program so that it correctly meets the program specifications given below.  

Specifications: Create a menu-driven program that finds and displays areas of 3 different objects. The menu should have the following 4 choices: 1 -- square 2 -- circle 3 -- right triangle 4 -- quit If the user selects choice 1, the program should find the area of a square. If the user selects choice 2, the program should find the area of a circle. If the user selects choice 3, the program should find the area of a right triangle. If the user selects choice 4, the program should quit without doing anything. If the user selects anything else (i.e., an invalid choice) an appropriate error message should be printed.

Sample Run Program to calculate areas of objects         1 -- square         2 -- circle         3 -- right triangle         4 -- quit 2 Radius of the circle: 3.0 Area = 28.2743

2:  Once you have your program working, run it 4 times, each time testing a different valid menu choice. Then run it a fifth time using an invalid menu choice (such as 0 or 5).  Make sure your program works correctly for all cases and take copy of it.

Answer 1

The following is the menu-driven program implemented in python

Source code:

# Python Program to calculate the area of different shapes

import math

# Print Menu

print("Select anyone from the below choices")

print("1 -- square")

print("2 -- circle")

print("3 -- right triangle")

print("4 -- quit")

# Main function

def main():

# Take input of the choice

choice = int(input("Enter any choice from the above available choices: "))

# Square

if choice == 1:

print("You have selected square option")

side = float(input("Enter the side of the square: "))

area = side ** 2

print("The area of the square is: {}".format(area))

# Circle

elif choice == 2:

print("You have selected circle option")

radius = float(input("Enter the radius of the circle: "))

area = math.pi * (radius ** 2)

print("The area of the circle is: {}".format(area))

# Right triangle

elif choice == 3:

print("You have selected right triangle option")

a, b, c = list(map(float, input("Enter the base, height, hypotenuse of right triangle separated by a space: ").split()))

area = 0.5 * a * b

print("The area of the right triangle is: {}".format(area))

# Quit

elif choice == 4:

print("You have selected quit option")

print("Program has been terminated")

return

# Invalid choice

else:

print("Invalid choice has been selected. Please select choices from 1-4 as shown above")

if __name__ == "__main__":

main()

Please refer to the following code screenshots for the indentation:

1 # Python Program to calculate the area of different shapes import math 2 3 4 5 6 7 B 9 10 # Print Menu print("select anyone from the below choices") print("1 - square") print("2 circle") print("3. right triangle") print("4 -- quit") # Main function def main(): 2 13 # Take input of the choice choice = int(input("Enter any choice from the above available choices: ")) 15 16 17 # Square if choices 11 print("You have selected square option") side = float(input("Enter the side of the square: -)) area - side 2 print("The area of the square isi ()".format(area)) 19 20 21 22 23 24 25 26 27 28 #Circle elit choice w 21 print("You have selected circle option") radius - float(input("Enter the radius of the circle: ")) area = math.pl • (radiuses 2) print("The area of the circle is: ()".format(area)) 30

31 33 34 # Right triangle elif choices 31 print("You have selected right triangle option) a, b, c = list(map(float, input("Enter the base, height, hypotenuse of right triangle separated by a space: ").split())) area = 0.5.a. b print("The area of the right triangle is: ().format(area)) 36 37 38 39 40 #Quit elit choice - 4: print("You have selected quit option") print("Program has been terminated") return 42 43 44 # Invalid choice else print("Invalid choice has been selected. Please select choices from 1-4 as shown above) 40 47 48 49 50 it main name main()

Execution of the above code with different choices is shown below:

Choice - 1

2. circle Select anyone from the below choices 1 - square 3. right triangle Enter any choice from the above available choices: 1 You have selected square option Enter the side of the square: 4 The area of the square is: 16.0 -- quit

Choice - 2

Select anyone from the below choices 1 - square 2 - circle 3 -- right triangle ** quit Enter any choice from the above available choices: 2 You have selected circle option Enter the radius of the circle: 1 The area of the circle is: 3.141592653589793

Choice - 3

Select anyone from the below choices 1 - square 2 - circle 3 -. right triangle quit Enter any choice from the above available choices: 3 You have selected right triangle option Enter the base, height, hypotenuse of right triangle separated by a space: 3 4 5 The area of the right triangle is: 6.0

Choice - 4

Select anyone from the below choices 1 - square 2 .. circle 3 -- right triangle Enter any choice from the above available choices: 4 You have selected quit option Program has been terminated 4 -- quit

Invalid choice

Select anyone from the below choices 1 - square 2 - circle 3 -- right triangle 4 -- quit Enter any choice from the above available choices: 5 Invalid choice has been selected. Please select choices from 1-4 as shown above