ON...GOSUB Conditional Subroutine Execution
Format
ON num GOSUB stmtref,stmtref,...
Where:
num | Value determines the location to which to transfer. Numeric expression. Integer range -32768 to +32767. |
stmtref | Program line number or statement label to which to transfer control. |
Description
Use the ON ... GOSUB directive to transfer control to a subroutine at one of the statement references listed, based on the numeric value supplied:
num <=0 | Control is transferred to the first statement specified. | |
num =1 | Control is passed to the second statement number specified. | |
num =2 | Control is passed to the third. | |
num =3… nnn | Control is passed sequentially. |
If num is greater than the number of stmtref supplied, the last stmtref is assumed.
See Also
GOSUB.. Execute Subroutine
RETURN Return From a Subroutine
Example
0020 on X gosub 0100,0200,0300,0400,0500ON... | GOSUB | |
X <= 0 | Transfers to 0100 | |
X = 1 | Transfers to 0200 | |
X = 2 | Transfers to 0300 | |
X = 3 | Transfers to 0400 | |
X >= 4 | Transfers to 0500 |