Objective-C Quick Syntax Reference

CHAPTER 14

If Statements

If Statements Defined

If statements are used when you want to make a choice to execute code based on the trueness of a condition. To make this work, you evaluate an expression that uses relational operators to yield a YES or NO result. If you evaluate an express to be true, then you can execute the code; otherwise you can ignore the code.

You need the if keyword and an expression here along with a code block to use the if statement.

if(1 < 2){    NSLog(@"That is true");}

The statement is saying that if 1 is less than 2, then execute the code that will print out the string “That is true” to the console log.

Else Keyword ...