#include <stdio.h>
int main() {
   int c;
   FILE *fp;
   fp=fopen("tekstfile.txt", "w");
   if (fp==NULL) {
      printf("Kan file tekstfile.txt niet openen!");
   }
   else {
      fprintf(fp, "Hallo\nDaar\n");
      fclose(fp);
   }
   fp=fopen("binfile.bin", "wb");
   if (fp==NULL) {
      printf("Kan file binfile.bin niet openen!");
   }
   else {
      fprintf(fp, "Hallo\nDaar\n");
      fclose(fp);
   }
   getchar();
   return 0;
}