Exercise 1: a) Write a C++ program that will: - declare the constant PI=3.14159 using #define syntax; - have a loop that will print 10 values that are: PI, the square of PI, the cube of PI, and so on using the pow() function from . b) Amend the above program to use the const keyword instead of #define syntax. (Note: This is the proper way in modern CH, which has the benefit of type checking, etc.)