Programming in Objective-C, Fourth Edition

6. Making Decisions

A fundamental feature of any programming language is its capability to make decisions. Decisions were made when executing the looping statements to determine when to terminate a loop. The Objective-C programming language also provides several other decision-making constructs, which are covered in this chapter:

• The if statement

• The switch statement

• The conditional operator

The if Statement

The Objective-C programming language provides a general decision-making capability in the form of a language construct known as the if statement. The general format of this statement is shown here:

if ( expression )    program statement

Imagine that you could translate a statement such as “If it is not raining, then I will go swimming” ...