Write a short program creating and initializing each of the following types of variables: int, float, double, char, and then outputting the values to the console.

Modify the program in Exercise 3-1 to change the values of variables and output the values to the console a second time.

Modify the program in Exercise 3-2 to declare a constant float Pi equal to 3.14159. Then assign a new value to pi (3.1) and output its value with the other variables. What happens when you try to compile this program?