Control Flow

Conditional statements of the following form are supported:

if (expression) statement

if (expression) statement else statement

If expression is non-zero, statement is evaluated. If expression is zero, the optional else statement is evaluated.

For example:

Compound statements must be enclosed in { }. Example:

Multiple else-if clauses are supported:

The ternary conditional acts as a concise if-else statement:

 var = (expression) ? statement1 : statement2

Is equivalent to:

if (expression)

{

    var = statement1;

}

else

{

    var = statement2;

}

For example:

The switch statement causes control to be transferred to one of several statements depending on the value of an expression.

switch (expression) statement

Unlike C/C++, expression may evaluate to an integer, real or string value. The statement is typically compound and is labeled with a case prefix as follows:

case constant-expression:

Each case constant must be unique. The optional default labeled statement is executed if expression does not compare to any case constant.