Path: utzoo!mnetor!uunet!husc6!mit-eddie!uw-beaver!cornell!rochester!udel!princeton!phoenix!pucc!MJSCHMEL
From: MJSCHMEL@pucc.Princeton.EDU (Michael J. Schmelzer)
Newsgroups: comp.sys.mac.programmer
Subject: strings again
Message-ID: <4629@pucc.Princeton.EDU>
Date: 3 Mar 88 02:10:41 GMT
Reply-To: MJSCHMEL@pucc.Princeton.EDU
Organization: Princeton University, NJ
Lines: 46
Disclaimer: Author bears full responsibility for contents of this article


Thank you everybody for the help in converting
C to Pascal strings. I had got it right, but was
a victim of my own prototyping. To wit:
 
pascal void Debugger()
	extern 0xA9FF;
 
pascal void DebugStr(aString)
	Str255 aString;
	extern 0xABFF;
	
static char *str = "Wowwy zowwy";
		
main()
{
	char buffer[255];
	
	Debugger(); /* works, no problem */
	
	strcpy(buffer, str);
	c2pstr(buffer);
	DebugStr(buffer); /* type mismatch here */
 
	printf("%s\nDone.\n",str); /* it's okay, it's an MPW tool */
}
 
Gave me a "Type mismatch." Why did it do that, I wondered.
Then I saw that I had prototyped it that way! (Which shouldn't
be faulted, because I got it verbatim from the MPW manual.)
 
Changing the prototype to...
pascal void DebugStr(aString)
	char * aString;
	extern 0xABFF;
...made it work like a charm. No problem.
 
Is there any way I could have made it work with the original
prototype? Simple typecasting -
	DebugStr ((Str255) buffer);
- did not work. (Why not?)
 
Yo Apple! How would I make the program work if it was
prototyped as a Str255??? Thanks everyone.
==============================================================================
comes around    Mike Schmelzer MJSCHMEL@PUCC.Princeton.Edu    what goes around
==============================================================================