#include <stdio.h>

int main(int argc, char** argv) {

  // write the file
  //
  FILE* fp = fopen(argv[1], "w");
  float x = 27.0;
  fwrite(&x, sizeof(float), 1, fp);
  fwrite(&x, sizeof(float), 1, fp);
  unsigned char d = 27;
  fwrite(&d, sizeof(unsigned char), 1, fp);
  double y = 27.0;
  fwrite(&y, sizeof(double), 1, fp);
  short int s[] = {-27, -27, -27, -27, -27, 27, -27, 27};
  fwrite(s, sizeof(short int), 8, fp);
  fclose(fp);

  // read the file
  //
  FILE* fp2 = fopen(argv[1], "r");
  float x1, x2;
  fread(&x1, sizeof(float), 1, fp2);
  fread(&x2, sizeof(float), 1, fp2);
  fprintf(stdout, "(1) %f %f\n", x1, x2);

  unsigned char d1;
  fread(&d1, sizeof(unsigned char), 1, fp2);
  fprintf(stdout, "(2) %d\n", d1);

  double y1;
  fread(&y1, sizeof(double), 1, fp2);
  fprintf(stdout, "(3) %f\n", y1);

  float sum = x1 + x2 + d1 + y1;

  short int s1;
  while (fread(&s1, sizeof(short int), 1, fp2) > 0) {
    sum += s1;
    fprintf(stdout, "(4) %d\n", s1);
  }
  fclose(fp2);

  fprintf(stdout, "the sum of the values in %s is %f\n",
	  argv[1], sum);

  // exit gracefully
  //
  return(0);
}