Path: utzoo!censor!geac!torsqnt!hybrid!scifi!bywater!uunet!overload!dillon
From: dillon@overload.Berkeley.CA.US (Matthew Dillon)
Newsgroups: comp.sys.amiga.programmer
Subject: Re:  Good Programming stops guru |||| and BNF of C++
Message-ID: <dillon.9236@overload.Berkeley.CA.US>
Date: 14 Jan 91 02:03:02 GMT
References: <1806@winnie.fit.edu> <658@tnc.UUCP> <1991Jan11.073543.16293@zorch.SF-Bay.ORG>
Organization: Not an Organization
Lines: 67

In article <1991Jan11.073543.16293@zorch.SF-Bay.ORG> mykes@zorch.SF-Bay.ORG (Mike Schwartz) writes:
>I use Manx 'C' 3.6, so my advise may be limited to this environment.
>
>Manx supplies a routine called _abort() in the library which can be

    Under ANSI C you can use atexit().  This will be MUCH more portable
    then _abort() which is MANX specific.

    main()
    {
	atexit(myexitrt);

	...
    }

    myexirt() is called when the program exits, whether it be a normal
    exit or an abnormal exit.

>The code for panic shows how (using 32-bit INT model of Manx) you can
>make a printf() like routine without a lot of ugly looking code.  The
>drawback is that you are pushing a lot of parameters in a lot of places.

    Additionally, under ANSI C, there are var-args printing calls,
    vprintf(), vsprintf(), and vfprintf().  These make it easy to
    write your own error-printing routines without having to hack
    large variable lists:

	/*
	 *  Example use var-args [v]*printf() orutines
	 *  get the math pfmt.
	 */

	#include <stdio.h>
	#include <stdarg.h>

	void gagprint(char *, ...);

	main()
	{
	    gagprint("%d %d %d\n", 1, 2, 3);
	    return(0);
	}

	void
	gagprint(ctl, ...)
	char *ctl;
	{
	    va_list va;
	    int n;

	    va_start(va, ctl);
	    n = vprintf(ctl, va);
	    printf("%d chars written\n", n);
	    va_end(va);
	}

>
>Mykes

--
				-Matt


    Matthew Dillon	    dillon@Overload.Berkeley.CA.US
    891 Regal Rd.	    uunet.uu.net!overload!dillon
    Berkeley, Ca. 94708
    USA