1. PP 2.1 Create a revised version of the Lincoln program from Chapter 1 to print the quotation
inside a box made up of character ^.
2. PP 2.2 Write a program that reads four integers and prints the sum of their squares.
3. PP 2.3 Write a program that reads three floating point numbers and prints the cube of their
average.
4. PP 2.7 Write a program that prompts for and reads integer values for typing speed and number
of characters in the document, then prints the time required to type them as a floating point
result.