You need to make an easy-to-use interface to communicate with the user.
Here is the calculator sample:
Please choose one of the options below.
1. Calculate the perimeter of a rectangle
2. Calculate the area of a rectangle
3. Calculate the volume of a cube
4. Calculate the circumference of a circle
5. Calculate the area of a circle
So the user will choose 1, or 2, or 3 or… and then the
the program will prompt the user the enter the measurement
each question at a time.