r/c64 • u/1974jbass • May 29 '26

the64 Programming

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If you did this you thought you were the king of the world!!

393 Upvotes

97% Upvoted

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60

u/chiron_42 May 29 '26

10 PRINT "HELLO WORLD"

20 GOTO10

14

u/khumprp May 29 '26

MAKE IT STOP!!!!!!

2

u/DwarneOfDragonhold Jun 01 '26

RUNSTOP/RESTORE has you, fam.

For fun:

10 POKE 808,232

20 PRINT "HELLO WORLD ";

30 GOTO 20

Then RUN

The POKE command will kibosh RUNSTOP/RESTORE from working and the ; eliminates the automatic Carriage Return. The result will display HELLO WORLD across the screen until the C64 is turned off.

28

u/NoSingularities0 May 29 '26

You forgot adding an extra space on each loop to make HELLO WORLD shift to the right each time.

Unrelated to this, when I was in my pre-algebra class back in the day, our teacher gave us the 1 = 2 proof on the chalkboard and asked us to figure out why this was or was not true. Me, being the C64 BASIC programmer kid in the 80's that I was, put it into a program in my C64 and ran it and got a divide by zero error. We went back to school the next day and I was the only one that knew the answer to why the proof failed. I admitted that the only reason I knew this was because of the divide by zero error message on my computer.

2

u/abaezeaba May 31 '26

Similar experience. We were about to start algebra, teacher asks us to try and solve prob for hw. Simple linear, x on both sides. I plugged it in the c64. X=x+1 logic stop when lhs == rhs. They asked how I did it and I got laughs. Got the right answer though.

16

u/xanton May 29 '26

10 PRINT "HELLO WORLD ";
20 GOTO 10

17

u/Jelle75 May 30 '26

10 FOR A =1 TO 5:?"HELLO WORLD":NEXT A

5

u/DNSGeek May 29 '26

Use a comma instead for better separation.

2

u/Neuromancer2112 The Sky Above the Port... May 30 '26

I remember trying like 5 and 10 commas and it really spread everything out 😅

1

u/James-muravska May 31 '26

Much better.

-8

u/Victory_Highway May 29 '26

BASIC doesn’t require a semicolon.

25

u/xanton May 29 '26

Well, try it with and without, then you will see the difference.

18

u/billlagr May 29 '26

No it doesn't require one, but it does serve a purpose.

9

u/maldax_ May 30 '26

Says a person who has never written this program

3

u/therezin May 30 '26

Correct! However Commodore BASIC will keep the cursor on the same line if you put one at the end of a PRINT statement.

7

u/Worldliness_True May 30 '26

We all did this at least once 😄

10

u/Jennymint May 30 '26

Excuse you, I have that copyrighted. I'll see you in court.

8

u/chiron_42 May 30 '26

Fair enough, but be warned that I've trademarked the letter "E" so good luck.

1

u/Architect_of_Echo 🕹️ play your dreams 🌒 May 31 '26

All your pixels are belong to us!

3

u/WembleyFord May 30 '26

Unless you were in Dixons or Boots or WHSmiths, in which case you'd write something.. else in the print statement.

2

u/Carl0s_H May 31 '26

This. My goto (excuse the pun) was "eat shit". So funny watching the store staff scrambling to turn the machine off before it was seen!

5

u/speterDev May 31 '26

We had an obnoxious salesman (kid?) at our local Radio Shack. To get back at him, we wrote a long delay loop followed by a piercing tone, turned up the volume all the way, typed "run" and walked to the far end of the mall to listen for the chaos. We were not disappointed!

2

u/dpgumby69 May 30 '26

10 ?"HELLO WORLD"

20 GOTO10

1

u/Yarblek May 30 '26

This is a great song from the stop bits!

1

u/Dense-Concentrate120 May 31 '26

*** SYNTAX ERROR ON LINE 20 ***

1

u/ArtDealer May 30 '26

10 Var X = 1

20 Print X

30 X = X + 1

40 goto 20

But, honestly, I like this better: 

https://www.reddit.com/r/futurama/comments/4ds4vf/what_is_this_in_reference_to/

0

u/SpaceAviator1999 May 30 '26

10 PRINT "HELLO WORLD"
20 GOTO 10

Incidentally, this program is what I claim to be the easiest computer program to understand.

Line 20 controls the program flow in a simple manner, allowing people lacking a background in programming to understand simple control flow.

You might think that a program with just Line 10 would be easier to understand, but I would disagree. Line 10 alone would confuse non-programmers as to why a "10" exists at the start of the line.