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Commands - 82

Statement

SYNTAX: ON expression GOSUB line [,line] ...

ON expression GOTO line [,line] ...

PURPOSE: In the ON. .. GOT O statement, the value of the expression deter mines which line num ber in the list

will be used for branching. For example, if the value is 3, the third line number in the list will be

the destination of the branch.

NOTE: You may not use labels with this statement.

REMARK S: In the ON...GO SUB statement, each line number in the list must be the first number of a subroutine.

line must be a number and not a variable. Maximum number of line parameters is limited by the

number of characters you can put in a line. For simplicity, no more than 5 line parameters should be

used on any one program line.

If the value of expression is zero or greater than the number of line parameters, the stateme nt is

ignored.

RELATED: RETURN

EXAMPLE: 200 ON R GOTO 150,300,320,390

If R= 1, the program goes to line 150

If R= 2, the progr am br anches to line 30 0 and continues from there. If R= 3, the branch will be to

line 320 and so on.

ERROR: < Can’t compile> – if line does not exist

< Data negative> – for expression

< Data > 255> – for expression

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Remote-processing CAMBASIC Manuale Utente Pagina 115