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Full Discussion: ANSI C vs POSIX
Top Forums Programming ANSI C vs POSIX Post 31247 by bb00y on Monday 4th of November 2002 08:11:11 PM
Old 11-04-2002
ANSI C vs POSIX

can somebody explain about the ANSI C vs POSIX. say i was using open and fopen, i know that open is POSIX, and fopen is ANSI C. i read that that POSIX is a system call and ANSI C is like a standard library function. wouldn't the fopen function has to call on open function anyway to open any kind of file? what's the difference between using open and fopen?
I guess i'm not sure what system call mean.
any article about the difference between the two will be very helpful.
thanks.
 

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explain_fopen_or_die(3) 				     Library Functions Manual					   explain_fopen_or_die(3)

NAME
explain_fopen_or_die - open file and report errors SYNOPSIS
#include <libexplain/fopen.h> FILE *explain_fopen_or_die(const char *pathname, const char *flags); DESCRIPTION
The explain_fopen_or_die() function opens the file whose name is the string pointed to by pathname and associates a stream with it. See fopen(3) for more information. This is a quick and simple way for programs to constitently report file open errors in a consistent and detailed fahion. RETURN VALUE
Upon successful completion explain_fopen_or_die returns a FILE pointer. If an error occurs, explain_fopen will be called to explain the error, which will be printed onto stderr, and then the process will termi- nate by calling exit(EXIT_FAILURE). SEE ALSO
fopen(3) stream open functions explain_fopen(3) explain fopen(3) errors exit(2) terminate the calling process COPYRIGHT
libexplain version 0.52 Copyright (C) 2008 Peter Miller AUTHOR
Written by Peter Miller <pmiller@opensource.org.au> explain_fopen_or_die(3)
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