Playing on a commodore 64, need help

[Smerrills]

Ok, I’m trying to write this simple text game on a commodore 64. (trying to learn basic first) And i for the life of me cannot understand why it’s having issues with my code. it keeps saying:

?UNDEF’D STATEMENT ERROR IN 170

But I cannot for the life of me understand what it means. Here’s my code

10 REM - THIS NUMBER GUESSING GAME IS BASED ON GUESS AND HI-LO

20 REM - FROM DAVID H. AHL’S BOOK BASIC COMPUTER GAMES.

30 PRINT “=======”

40 PRINT " ZERO!"

50 PRINT “=======”:PRINT

60 PRINT “I CHOOSE A NUMBER BETWEEN 1 AND 100.”:PRINT

70 PRINT “YOU MUST ZERO IN ON IT IN 7 GUESSES.”:PRINT

80 PRINT “I TELL YOU TO GUESS HIGHER, OR LOWER.”:PRINT

90 INPUT “PRESS ENTER TO START. READY”; START$

100 NUM = INT(100*RND(1))

110 PRINT:PRINT “====================”:PRINT

120 PRINT "I HAVE CHOSEN A NUMBER ":PRINT:NUM

130 FOR COUNT = 1 TO 7

140 PRINT "GUESS ";COUNT;

150 INPUT ": "; GUESS$

160 GUESS = VAL(GUESS$)

170 IF GUESS = NUM GOTO 250

180 IF GUESS > NUM THEN PRINT “GUESS LOWER”

190 IF GUESS < NUM THEN PRINT “GUESS HIGHER”

200 PRINT

210 NEXT COUNT

220 PRINT:PRINT “YOU’VE USED ALL OF YOUR GUESSES.”

230 PRINT “THE NUMBER WAS”;NUM

240 GOTO 270

250 PRINT "YOU GOT IT IN ";COUNT;

260 PRINT " GUESSES."

270 PRINT

280 INPUT "PLAY AGAIN? (Y/N) "; A$

290 IF A$ = “Y” THEN GOTO 100

300 END

Can anyone help me understand where I’m wrong?

[noenken]

Maybe with a then?

170 IF GUESS = NUM THEN GOTO 250

[Smerrills]

nope just tried that, still not working

[noenken]

This one works:

10 REM - THIS NUMBER GUESSING GAME IS BASED ON GUESS AND HI-LO
20 REM - FROM DAVID H. AHL’S BOOK BASIC COMPUTER GAMES.
30 PRINT "======="
40 PRINT " ZERO!"
50 PRINT "=======":PRINT
60 PRINT "I CHOOSE A NUMBER BETWEEN 1 AND 100.":PRINT
70 PRINT "YOU MUST ZERO IN ON IT IN 7 GUESSES.":PRINT
80 PRINT "I TELL YOU TO GUESS HIGHER, OR LOWER.":PRINT
90 INPUT "PRESS ENTER TO START. READY"; START$
100 NUM = INT(RND(1)*100)
110 PRINT:PRINT "====================":PRINT
120 PRINT "I HAVE CHOSEN A NUMBER ":PRINT
130 FOR COUNT = 1 TO 7
140 PRINT "GUESS ";COUNT;
150 INPUT ": "; GUESS$
160 GUESS = VAL(GUESS$)
170 IF GUESS = NUM GOTO 250
180 IF GUESS > NUM THEN PRINT "GUESS LOWER"
190 IF GUESS < NUM THEN PRINT "GUESS HIGHER"
200 PRINT
210 NEXT COUNT
220 PRINT:PRINT "YOU’VE USED ALL OF YOUR GUESSES."
230 PRINT "THE NUMBER WAS";NUM
240 GOTO 270
250 PRINT "YOU GOT IT IN ";COUNT;
260 PRINT " GUESSES."
270 PRINT
280 INPUT "PLAY AGAIN? (Y/N) "; A$
290 IF A$ = "Y" THEN GOTO 100
300 END

[Smerrills]

what did you change? sorry, i’ve been staring at this all day, i can’t see the differences. my eyes are so boggy

[noenken]

Mainly the “ to ". Something must have reformatted those. (That’s why I just edited the last post again btw. Happened here as well) Also I removed the NUM from line 120. No point in playing otherwise, right?

[Smerrills]

Huh, the num from that line isn’t supposed to print. At least it doesn’t on my end.

[noenken]

Ah, right. I was wondering what that one did and tried 120 PRINT "I HAVE CHOSEN A NUMBER ":PRINT NUM.
That worked but was showing the number of course so …

[Smerrills]

yeah, you forgot the : before num I think

[noenken]

That was throwing the error for me.

[Smerrills]

really? huh. I’ll reset my machine, and see if yours fixes all my problems

Here goes another 15 minutes of typing

[noenken]

BTW: If you’r running VirtualC64, you can totally cheat and copypaste.

[Smerrills]

Sadly, I am not using an empulator. I’m using an actual C64. I found it in a dumpster in the city I live in. The only reason it was thrown out, was it wouldn’t boot up. Come to find out, the power button came unsoldered. Works perfectly fine. Not a scratch on it.

And this forces me to actually type everything in, and LEARN what the commands do lol.

[noenken]

Did that when I was 10 or so, don’t need that anymore in my life.
Fuck you, Datasette!

Did get a 1541II eventually. And from then on it was just pirated games anyway. xD

[Smerrills]

I’m trying slowly to get back into coding. Figured i’d get back to basics cause I forgot everything I knew. Once I get down Basic on c64 I plan to just keep going up the line till I know something worth possibly getting a job for. I’m 38 and haven’t done much with my life, I wanna get back to where I was. And maybe do something with my life.

[awadofpaper]

I have a “syntax error” in line 120 no idea why.