Gosub/return - GameCreators Forum

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Code Stealer

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Joined: 12th Feb 2004

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Posted: 2nd Apr 2004 11:21

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I understand the idea of subroutines, but Im a little confused about how to use them, and I cant seem to find the right documentation about them. In my program I write

gosub blahblah

then I have "blahblah" as a heading and the program jumps to there, and when it reaches "return" it goes back to the "gosub" command. My question is this: how do I say to DarkBasic that "blahblah" is a flag? Do I have to put it in capitals, or have a semicolon with it or something?

Please would somone also explain how functioins work, and how they are different from a gosub command.

Any help here would be great!

GIve me more power!

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the_winch

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Joined: 1st Feb 2003

Location: Oxford, UK

Posted: 2nd Apr 2004 13:42 Edited at: 2nd Apr 2004 13:46

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to define a subrouting you need a label like when you use goto.
from the dbpro help

Quote: "The label can be made up from any combination of alphabetic characters, but you must end the declaration of the label using a colon ":". You only need to use a colon when you are declaring the label, and should not be used when calling the label from a GOSUB command."

So basically a label is any combination of letters and numbers that ends in a ":".

+ Code Snippet

i as integer

do
  cls
  gosub _add
  text 0,0,str$(i)
loop

_add:
 i = i+1
return

Functions are quite well explained in Hamish McHaggis tutorial that you can download from here.

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Code Stealer

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Posted: 2nd Apr 2004 16:30

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Thank you MrWinch

GIve me more power!

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