RESTORE I -> undefined line number

Master (245)

05-01-2023, 19:50

In MSX BASIC, I'm trying to assign a number to a variable which will be the line number from which the DATA values should be read:

10 LET I = 60
20 RESTORE I
30 READ J:IF J=0 THEN END
40 PRINT J
50 GOTO 30
60 DATA 1,2,3,4,5,0

I expect this to output 1,2,3,4 and 5, each on a line, but instead, I get Undefined line number in 20.

Does RESTORE only accept values, not variables?

Enlighted (6935)

06-01-2023, 00:33

Only values, no variables

Enlighted (6221)

06-01-2023, 01:07

You can use DIM and a variable table to do it.

Master (245)

06-01-2023, 09:14

Thanks

Enlighted (6067)

07-01-2023, 02:38

This slightly modified code should work with tables:

10 DEFINT A-Z
20 DIM D(5,10)
30 COPY "MY_DATAS.DIM" TO D
40 IF D(C,0)=0 THEN END
50 PRINT D(C,0)
60 C=C+1: GOTO 40