GOTO Statements

GOTO statements transfer execution of the script to the beginning of the statement following the label associated with the GOTO. For example:

 

PROCEDURE Example_73;

LABEL 100;

VAR

i,j : INTEGER;

BEGIN

i:= 10;

j:= 2;

IF (j MOD 2 = 0) THEN GOTO 100;

i:= i * 5;

100: i:= i + 1;

Message(i);

END;

Run(Example_73);

If the condition (j MOD 2) = 0 evaluates to TRUE, execution in the script is transferred immediately to the beginning of the statement i:= i + 1, and the expression i:= i * 5 is never executed.

The general syntax for a GOTO statement is:

GOTO <label>;

GOTO statements have several cautions which must be observed whenever using them:

GOTO statements can only transfer execution within the same procedure, function, or main body of a script. They cannot be used to jump between procedures or between scripts.

The destination of a GOTO statement must always be the beginning of a statement.

Jumping to statements that are contained within the structure of other statements can have undefined effects; the VectorScript compiler will not recognize this action as an error.