5.2.9 if

Syntax:

if ( boolean_expression ) true_block
if ( boolean_expression ) true_block else false_block

Purpose:

executes true_block if the boolean condition is true. If the if statement is followed by an else statement and the boolean condition is false, then false_block is executed.

Example:

int i = 9; matrix m[i][i]; if (i > 5 and typeof(m) == "matrix") { m[i][i] = i; }