Commodore Plus 4 - Page 95

BASIC Version 3.5 Commands, Functions, and System Variables 83
GUESS A NUMBER BETWEEN 1 & 9? 6
RIGHT
PLAY AGAIN? NO
RUN
RUN line number
Abbr. rU
Executes the current BASIC program. Each time you issue a RUN command,
all variables in the program are cleared (numeric variables to zero and string
variables to nulls) because RUN contains an automatic CLR command.
Parameter: line number
Ordinarily you would use no parameter with the RUN command. But you can
include a line number if you want program executiori to start at a line other than
the first one in the program. You might want to run just part of a program while
you are still working it out.
Examples: RUN
ROT 200
Executes the current program.
Executes the current program from line 200. Preceding lines
are not executed unless a branching command sends control
back to a line before 200.
SAVE Abbr.sA
SAVE file name, device, end-of-tape flag
Stores a BASIC program on tape or disk. Although SAVE can be used to save
programs to cassette tape or disk, you should use this command to save to
cassette tape and use DSAVE to save to disk.
Parameters: "file name", device number, end-of-tape marker
1. You should include the name of the file. Enter the name in quotes. You can
use a variable name in place of the file name, but the variable must have a value. It
may be in parentheses (not in quotes). The only time this is likely to be useful is
when you store a program from within itself.
If you omit the file name in a SAVE to tape, the program is stored without a
name, which is never a good idea.
2. Device number can be either 1 (for cassette tape recorder) or the disk drive
number (8-11); no other numbers are allowed. The default value is 1, for cassette
recorder, so you do not need this parameter if you are storing onto a cassette tape
recorder.
3. If you are storing onto tape, you can add a final parameter to specify two