Thread: Reading lines separately from a file.

Hi all!

During my OS assignment, I'm having a little problem regarding filing. The problem is that I'm to read each line in a separate array and after that perform further operations. I've initially read the entire file in a char array and after that I intend to split it up accordingly. The file is in the following format:

P1 0
12 2 21 2 12 32 18
P2 9
13 17 3 21 45 67 21

(and so on)

I've written the following code:

Code:

(Variables definitions and all)

f=fopen ("umer.txt","r");
if (!f)
      printf ("Could not open the file.\n");
while (fgets (s,'\n',f)!=NULL)
{
      if (s[i] == 'P')
      {
            processes++;
      }
      printf ("%s", s);
}
printf ("processes are: %d\n", processes);
printf ("\n");
fclose(f);

while (s[i]!='\n')
{
      printf ("char is: %c\n", s[i]);
      i++;
      printf ("-%d-", i);
}

But when I output the supposedly initial charaters from the array s[i] (which contains the entire file supposedly), it outputs 4,5,7,6. (It should output the first line of the file, i.e P1 (a tab) 0)

What should I do? Any help would be highly appreciated.

Thanks.

Where is i in the midst of this? You can't just use the same value for i the whole time.

It's actually:

Code:

fgets (s,1000,f)