From:	Martin Ambuhl <mambuhl AT earthlink DOT net>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: more on variables - what includes
Date:	Wed, 15 Sep 1999 21:12:41 -0400
References:	<000901bf0096$cff07540$44f243c3 AT marocky>
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Hakan Venderlof wrote:
> 
> What include should be used for this?

#include <stdio.h>	/* or <cstdio> in C++ */
will define FILE, fopen, fscanf, fprintf, and fclose (among others) for
you.

> 
> FILE *f;
> int v;
> f = fopen("variable.txt", "rt");
> fscanf(f, "%d", &v);
> fclose(f);
> f = fopen("variable.txt", "wt");
> fprintf(f, "%d\n", v);
> fclose(f);
> 
> Hakan Venderlof wrote:
> >
> > Hello
> > I would like to load an variable from a file
> > 'variable.txt'  looking like  this:
> >
> > 25
> >
> > and then change the variable in a program and
> > save the variable to the samefile, eg overwriting the file
> > to for example
> >
> > 50
> >
> > How should this be written?
> 
> ***  greetings         grok        sweden  ***

-- 
Martin Ambuhl	mambuhl AT earthlink DOT net

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