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From: | "Damian Yerrick" <web DOT poison AT pineight DOT 8m DOT com> |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | Re: open console into binary mode ? |
Date: | Sun, 26 Sep 1999 14:49:05 -0500 |
Organization: | Rose-Hulman Institute of Technology |
Lines: | 56 |
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To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
Reply-To: | djgpp AT delorie DOT com |
Bonifati <abonifati AT telsa DOT it> wrote in message news:7slfup$m1f$1 AT fe2 DOT cs DOT interbusiness DOT it... > i have to write some filter programs which must work for binary files, not > only for text ones. > > i tried to open console into binary mode, but my program > crashes when the input isn't redirect from a file. DOS's console is always in text mode. How would a console (a text input device) be in binary mode? > here an example: > > test.c > ------- > #include <stdio.h> > #include <fcntl.h> > main() ANSI says it should be int main(void) > { > char s[100]; > > fflush(stdin); > setmode(fileno(stdin), O_BINARY); > > gets(s); > puts(s); ANSI says you are missing return 0; All functions that don't return void should return something meaningful. This is especially true for main(), as its return value is passed back to the operating system as a batch file's ErrorLevel value. > } > > C:\> test < infile > ok! it displays it's first line > > C:\> test > the program hangs! > nothing appears if i press some keys and CTRL-Break doesn't work! Check to see if stdin is a console first. IIRC, a console can never be opened in binary mode. Damian Yerrick http://pineight.webjump.com/
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