Thread: Please help connect file pointer

I have a list of positive integers in a file called "scores.txt" that is located on my C drive at the address I listed in the program.
I have been given this program by my instructor to open the file up so I can read it. It also has a while loop with an end-of file control within it that I don't really understand but I am working on that.
I have defined a file pointer & I have connected that file with fopen() but it still cannot find it and displays "Error . . .etc".
What am I doing wrong?

Code:

#include <stdio.h>

int main(void)
{
  FILE *scores;
  int score;

  scores = fopen("C:\\scores.txt","r");
  if (scores == NULL)
    printf("Error opening input file\n");
  else
    {
      while (feof(scores) <= 0)
	{
	  fscanf(scores,"%d",&score);
	  printf("%d\n",score);
	}
    }
  fclose(scores);
  system("pause");
  return(0);
}

system() is running an underlying operating system command. In your case "pause". This is inherently non-portable as not all operating systems will have a "pause" command, for example Unix operatings systems wouldn't understand it. Also, even on a PC, it would only work if the command is either (a) built-in, or (b) in the PATH.

I'm an idiot.
It's worked for me in the past but I will do it.

You could always print out errno or use perror to see why the program can't find your file.

Code:

#include <stdio.h>
#include <errno.h>

int main(void)
{
  FILE *sfp;
  unsigned int score;

  sfp = fopen("C:\\scores.txt","r");

  if ( sfp != (FILE *) NULL )
  {
/* Put a loop around this bit */
	  fscanf(sfp, "%u", &score);
	  printf("score %u\n",score);
/* end of loop */
       fclose(sfp);
   } 
   else
   {
        /* find out what the error is ! */
        printf("open failed with errno=%d\n", errno);
   }

  return(0);
}

I know, I just prefer it stylewise.