To: sxotty AT hotmail DOT com
Date: Tue, 02 May 2000 05:30:49  0000
From: "nimrod a. abing" <synflood AT eudoramail DOT com>
Message-ID: <NDIAGJMBACIECAAA@shared1-mail.whowhere.com>
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Cc: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

On Tue, 02 May 2000 03:32:04   Sxott b. wrote:
>I want to read 2 values from a text file, modify them and write them back.  
>I placed them alone on a line each so the file looked like this
>
>12
>45
>
>
>that was all, but I couldn't figure out how, so I wrote the text file as
>
>a12
>c45
>
>that way I could search for a and take the number following, and likewise 
>with c, but none of these things worked, is there a way to do this?  how 
>would I go about it thanks.
>if ((fp = fopen("c:\\text.txt","rt")) == NULL)
>  {
>    printf("Error opening file text.txt\n");
>  }
>  if(write!=1)
>  {
>  //here is the place to read in added and counted
>       //dos_read  fread(added_int,size?,1,fp); these are wrong
>       //fread(counted_int,size?,1,fp);
>        for(i=0;(c=fgetc(fp))!=EOF&&i<1000;++i)
>          data[i]=(char)c;
>       for(c=0;c<i;++c)
>         if(data[c]=='a'){added_int=data[c+1];}
>         if(data[c]=='c'){counted_int=data[c+1];}
>  }
>fclose(fp);

Hmmm... judging from your comments, you're using C++.
Maybe you should try using C++ file streams instead.
You can use them just like you would use `cout' and 
`cin' C++ streams (ie take input with `<<' and output
with `>>').

Or have tried replacing `fread' with `fscanf'? It
works just like `scanf' only it works with *open*
files. `scanf("%d", %data)' is also 
`fscanf(stdin, "%d", &data)'. `fread' is best used
for reading in large chunks of a file opened in
binary mode. In your case, `fscanf' would work since
your separators are newlines.

Have fun!

---
nimrod_a_abing

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