Thread: Need some help debugging

Originally Posted by whiteflags

Code:

for ( i=0; i<19; i++)

Does this loop have a purpose?

No; I removed it. Thanks.

Originally Posted by jimblumberg

You really don't need either of those if() statements at the bottom of your loop because you're while() statement limits the loop to only accepting 'C' or 'c'.

Jim

Thanks; it is a lot simpler now.

I works very well now as far as I can tell. Thank you so much.

Code:

#define LINE_SIZE 200
# include <stdio.h>
# include <stdlib.h>
int main ()
{
  FILE *fp;
  fp = fopen ("somefile.txt", "r");
  if (fp == NULL)
  {
    puts("Could not open the file");
    exit(0);
  }
  int i, ch, m, n;
  ch = 0;
  char line [LINE_SIZE];
  printf ("Press 'q/Q' to quite and any other key to continue");
  while ((ch=getchar()!='q') || (ch == 'Q'))
  {
      fgets(line, LINE_SIZE, fp);
      printf (" \n Enter the value of starting column ");
      scanf("%d", &m);
      printf (" \n Enter the value of ending column ");
      scanf ("%d", &n);
      int columCounter;
      for (columCounter = m; columCounter < n+1; columCounter++)
      putchar(line[columCounter]);
      printf ("\nPress 'C/c' to continue or 'q/Q' to quite");
      ch = getchar();
   }
}