int save(float d)
 {
	  FILE *fp;
	  char fn[50];
 
	  printf("What is the filename? ");
	  flushall();
	  gets(fn);
 
	  if((fp = fopen(fn, "wb")) == NULL)
	  {
			printf("Cannot save file");
			return 0;
	  }
 
	  fwrite(d, sizeof(float), 1, fp);
 
	  printf("\nFile saved");
	  fclose(fp);
	  return 0;
 }
 
 int load()
 {
	  FILE *fp;
	  float b;
	  char fn[50];
 
          printf("What is the filename? ");
          flushall();
	  gets(fn);
 
	  fp = fopen(fn, "rb");
	  fread(b, sizeof(float), 1, fp);
 
	  fclose(fp);
	  printf("%.2f", b);
	  return 0;
 }