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  Tutorial: if Statement - Overview

The purpose of the if statement is to make decisions.

Tutorial Details:

The purpose of the if statement is to make decisions, and execute different parts of your program depending on a boolean true/false value. About 99% of the flow decisions are made with if. [The other 1% of the decisions use the switch/case statement.]

Style. It is good programming style to always write the curly braces, {}, altho they are not needed if the clause contains only a single statement. There are two reasons this is good.

Reliability. When code is modified, the indentation is such a strong indicator of structure that the programmer may not notice that the addition of a statement at the "correct" indentation level really isn't included in the scope of the if statement. This is a suprisingly common error.


 

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if Statement - Overview

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