Statements

A program statement is any valid expression (usually an assignment or a function call) that is immediately followed by a semicolon, or it is one of the special statements described in the following. A label can optionally precede any statement and consists of an identifier followed immediately by a colon (see the goto statement).

Compound Statements

Program statements contained within a pair of braces are known collectively as a compound statement or block and can appear anywhere in the program that a single statement is permitted. A block can have its own set of variable declarations, which override any similarly named variables defined outside the block. The scope of such local variables is the block in which they are defined.