Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!apple!apple.com!dowdy
From: dowdy@apple.com (Tom Dowdy)
Newsgroups: comp.sys.mac.programmer
Subject: Re: print variables on screen ?
Message-ID: <5960@internal.Apple.COM>
Date: 2 Jan 90 18:14:08 GMT
References: <1837@ultb.isc.rit.edu>
Sender: usenet@Apple.COM
Organization: Apple Computer, Inc.
Lines: 44

In article <1837@ultb.isc.rit.edu> sfm3166@ultb.isc.rit.edu (S.F. Modi) 
writes:
> say printf("xxx") as it defaults to the compiler window. So how do you 
print a  variable ? for > example I want to print 

Well, this example might be a bit off base from what you want, but it 
certainly can be changed into what you want.  I've seen versions of this 
called wprintf() that output into a scrolling window.  I personally 
usually prefer to see things in Macsbug, because usually this code is only 
in for debugging.  

Follows is code to output printf() style into Macsbug.  I use this with 
MPW and <stdarg.h>.  Requires linking with C libraries.  The runtime 
routines require A5, thus not too useful in VBL tasks and so forth (sorry, 
Tim).   Uses 256 bytes of stack space for the temp string.  Haven't tried 
this sort of thing with Lightspeed, maybe someone can convert it and let 
the world know. 

Hope this is useful to some folks out there...

/* ---------------------------------------------------------- */
void debugprintf(char *sFormat, ...)
/*
   Stolen from Geoff Coco.
   Take a printf style list of args, pass them on and debugstr them.
   Call as you would printf.
*/
{
Str255   sOut;
va_list  pArgs;

va_start(pArgs, sFormat);
vsprintf(sOut, sFormat, pArgs);
c2pstr(sOut);

DebugStr(sOut);

} // debugprintf

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