From: Martin Ambuhl Newsgroups: comp.os.msdos.djgpp Subject: Re: more on variables - what includes Date: Wed, 15 Sep 1999 21:12:41 -0400 Content-Transfer-Encoding: 7bit References: <000901bf0096$cff07540$44f243c3 AT marocky> X-Posted-Path-Was: not-for-mail X-Accept-Language: en Content-Type: text/plain; charset=us-ascii X-ELN-Date: 16 Sep 1999 01:10:41 GMT X-ELN-Insert-Date: Wed Sep 15 18:15:12 1999 Organization: Nocturnal Aviation Lines: 44 Mime-Version: 1.0 NNTP-Posting-Host: dialup-209.246.66.90.newyork2.level3.net Message-ID: <37E04409.2B677F77@earthlink.net> X-Mailer: Mozilla 4.61 [en] (Win95; U) To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com Hakan Venderlof wrote: > > What include should be used for this? #include /* or 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 __________________________________________________________ Fight spam now! Get your free anti-spam service: http://www.brightmail.com