#include <stdio.h>

int
main (int argc, char **argv)
{
  char *progname = argv[0];
  FILE *fp;
  int c;
  unsigned count;
  
  if (argc != 2)
    {
      fprintf (stderr, "usage: %s FILE\n", progname);
      return 1;
    }

  fp = fopen (argv[1], "r");
  if (!fp)
    {
      perror (argv[1]);
      return 2;
    }

  count = 0;
  while ((c = fgetc (fp)) != EOF)
    if (c == '\n')
      count++;
  fclose (fp);
  printf ("%u\n", count);
  return 0;
}