Thread: Help Reading Data from Specific Filenames

Hi all,
I have been assigned to do a simple program for my lab group, but I feel like a 5th grader doing Calculus (maybe not THAT C illiterate) but I know some basics of C and received help from some people but I don't understand the solution.
Anyway, I need help reading data from files that have the word "sphere" in it. I was suggested to use a directory lister of all the files with the word "sphere" in it, which works fine (the code is posted).

Code:

#include <stddef.h>
#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>
int main (void)
     {
       DIR *dp;
       struct dirent *ep;

       dp = opendir ("./");
       if (dp != NULL)
         {
           while (ep = readdir (dp))
             if( strstr(ep->d_name,"sphere") != NULL)
                   puts (ep->d_name);
           (void) closedir (dp);
         }
       else
         perror ("Couldn't open the directory");

       return 0;
     }

However, looking at just the IF statement, I thought maybe I could do:

Code:

if (dp != NULL)
         {
           while (ep = readdir (dp))
             if( strstr(ep->d_name,"sphere") != NULL)
           while(fscanf(d_name, "%lf %lf", &Rows, &Cols) != EOF);
         }

Adding that fscanf of d_name to read the resulting "sphere" files, but of course it doesn't work.
Also, the directory listing of the "sphere" files are out of order, is there a way to sort them? If those sphere files get stored in an array, it'd be easy but I'm lost with that too.
Many Thanks!

Ok, I tried adding:

Code:

FILE *tmp;
char d_name[20];
.....
if( strstr(ep->d_name,"sphere") != NULL)
               {
                   puts (ep->d_name);
                   tmp = fopen(d_name, "r");
                   while(fscanf(tmp, "%lf %lf", &Rows, &Cols) != EOF);
                   {
                   printf("%lf %lf\n", Rows, Cols);
                   }
               }

I think fscanf would be in the right form? But I still get a Segmentation Fault. I'm a little confused with d_name and the "ep->d_name" portion.
Help please, thanks...

YES you are right...thanks Salem! It works, I'll post if I encounter anymore problems.