When instructions within a program are executed one after the other sequentially that program is said to have a linear structure. Decision making after examining all available options is very important in life as well as in programming. For example, it is the law that all males 18 or older should register with the selective service. If you are writing a program to send out reminders to enforce this law, the decision to send the letter should be based on if a person is male and if he is 18 or older. In this chapter you will learn how to.
