Modularity+Exercise

Answer the following questions on modularity:

> (a) reference > (b) value
 * 1) What are the benefits of a subroutine?
 * 2) What is the difference between a procedure and a function
 * 3) Explain what is meant by a parameter
 * 4) What is the difference between a formal parameter and an actual parameter?
 * 5) What can happen to a value if it is parameter is passed by: