#include <stdio.h>
#include <sys/stat.h>
#include <stdlib.h>
int main (int argc, char *argv[])
{
FILE * pq;
FILE * pz;
int  ch;
unsigned long i;
struct stat statbuf;
unsigned long abzug;


if (argc != 4)
{
	fprintf(stderr,"Aufruf:\n\n filecut <quelldatei> <zieldatei> <kürzungsfaktor(bytes)\n"); 
	exit(2);
}
abzug = atoi(argv[3]);

pq = fopen (argv[1],"rb");
pz = fopen (argv[2],"wb");
if ((pq == NULL)||(pz == NULL))
  {
  fprintf (stderr,"\nKein Öffnen\n");
  exit (4);
  }
if (lstat(argv[1], &statbuf))
  {
    fprintf(stderr,"\nkann lstat nicht ausführen\n");
    exit(3);
  }

for (i=0;i<(statbuf.st_size - abzug);i++)
{
 ch = fgetc(pq);
 fputc(ch,pz);
}
fclose(pq);
fclose(pz);
return 0;
}