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  • Messing around, creating a disk editor.

    From KP KP@jungletrain@outlook.com to comp.sys.cbm on Tue Jun 6 16:55:34 2023
    From Newsgroup: comp.sys.cbm

    I need some scrutinizing on my crappy coding expertise. Haven't made a program in years.. Could be junk or have no idea what I am doing. Gibberish? Lol.


    10 PRINT "***** C64 DISK EDITOR *****"
    20 PRINT
    30 INPUT "Enter the name of the disk file: "; FILENAME$
    40 PRINT
    50 OPEN 1, 8, 15, FILENAME$
    60 PRINT "1. Display sector"
    70 PRINT "2. Edit sector"
    80 PRINT "3. Save changes"
    90 PRINT "4. Quit"
    100 PRINT
    110 INPUT "Enter your choice: "; CHOICE
    120 PRINT

    130 IF CHOICE = 1 THEN
    140 INPUT "Enter the sector number to display: "; SECTOR
    150 PRINT
    160 SYS 64738
    170 PRINT
    180 GOTO 50
    190 ELSEIF CHOICE = 2 THEN
    200 INPUT "Enter the sector number to edit: "; SECTOR
    210 PRINT
    220 PRINT "WARNING: You are about to modify the sector contents."
    230 PRINT "Make sure you know what you're doing!"
    240 PRINT
    250 INPUT "Press any key to continue, or Q to cancel: "; KEY$
    260 IF KEY$ = "Q" OR KEY$ = "q" THEN GOTO 50
    270 PRINT
    280 SYS 64738
    290 PRINT
    300 GOTO 50
    310 ELSEIF CHOICE = 3 THEN
    320 PRINT "Saving changes..."
    330 PRINT
    340 CLOSE 1
    350 OPEN 1, 8, 2, FILENAME$
    360 CLOSE 1
    370 PRINT "Changes saved successfully!"
    380 PRINT
    390 GOTO 50
    400 ELSEIF CHOICE = 4 THEN
    410 CLOSE 1
    420 END
    430 ELSE
    440 PRINT "Invalid choice. Please try again."
    450 PRINT
    460 GOTO 50
    470 END IF

    480 GOTO 50
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  • From Andreas Kohlbach@ank@spamfence.net to comp.sys.cbm on Tue Jun 6 21:52:29 2023
    From Newsgroup: comp.sys.cbm

    On Tue, 6 Jun 2023 16:55:34 -0700 (PDT), KP KP wrote:

    I need some scrutinizing on my crappy coding expertise. Haven't made a program in years.. Could be junk or have no idea what I am
    doing. Gibberish? Lol.


    10 PRINT "***** C64 DISK EDITOR *****"
    20 PRINT
    30 INPUT "Enter the name of the disk file: "; FILENAME$
    40 PRINT
    50 OPEN 1, 8, 15, FILENAME$
    60 PRINT "1. Display sector"
    70 PRINT "2. Edit sector"
    80 PRINT "3. Save changes"
    90 PRINT "4. Quit"
    100 PRINT
    110 INPUT "Enter your choice: "; CHOICE
    120 PRINT

    130 IF CHOICE = 1 THEN
    140 INPUT "Enter the sector number to display: "; SECTOR
    150 PRINT
    160 SYS 64738

    That'll do a System-Reset, and the rest is ignored. Worse, you leaving a
    data channel open (line 50).

    170 PRINT
    180 GOTO 50
    190 ELSEIF CHOICE = 2 THEN

    Commodore BASIC (at least not of the C64) doesn't know "ELSE". May be of
    the C128? But I never used it.
    --
    Andreas
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