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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;
}
See Control structures; boolean expressions; break; else.

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