#include <stdio.h>


int main(int argc, char**argv) {
  FILE *fp;
  unsigned int i;
  if ((fp=fopen(argv[1], "w"))) {
    for (i=0; i<10000000; i+=4) {
      if (fwrite(&i, 4, 1, fp)!=1) {
        printf("error writing at byte %d\n", i);
        break;
      }
    }
    fclose(fp);
  }
}