Geometry Calculator
Write a program that displays the following menu:
Geometry Calculator
1. Calculate the Area of a Circle
2. Calculate the Area of a Rectangle
3. Calculate the Area of a Triangle
4. Quit
Enter your choice (1-4):
If the user enters 1, the program should ask for the radius of the circle and then display its
area. Use 3.14159 for π. If the user enters 2, the program should ask for the length and
width of the rectangle, and then display the rectangle’s area. If the user enters 3, the
program should ask for the length of the triangle’s base and its height, and then display its
area. If the user enters 4, the program should end.
Input Validation: Decide how the program should handle an illegal input for the
menu choice or a negative value for any of the other inputs.