/*  MAKEBDAT.C                                                    */
/*  Create a data file for use with BFLIGHT.C                     */
/*  The data file contains locations of various forces.           */
/*  The file also contains lift and weight and mass of the blimp. */



#include <stdio.h>
#include <stdlib.h>
#include <conio.h>

typedef struct
          {
          double xl,yl,
                 xd,yd,
                 xt,yt,
                 ml,mw,
                 mass;
          } DATASET;   /* Data file uses this structure. */


main()
  {
  DATASET d;
  char    fname[80];
  FILE    *fhandle;

  printf("File to use as specification data: ");

  scanf("%s",fname);

  printf("\n");

  if((fhandle = fopen(fname,"w+")) == NULL)
    {
    printf("ERROR opening file -- %s\n",fname);
    exit(0);
    }


  /* Get data information from the user. */
  printf("Enter all location data in meters.  values are relative to center of mass.\n");

  printf("Enter an x value then a y value with a space between.\n\n");

  printf("Location of center of lift floating point (x) (y): ");

  scanf("%lf %lf\n",&d.xl,&d.yl);

  printf("%lf %lf\n",d.xl,d.yl);

  printf("\nLocation of center of drag: ");

  scanf("%lf %lf\n",&d.xd,&d.yd);

  printf("%lf %lf\n",d.xd,d.yd);

  printf("\nLocation of thrusters: ");

  scanf("%lf %lf\n",&d.xt,&d.yt);

  printf("%lf %lf\n",d.xt,d.yt);

  printf("\n\nEnter the lift force: ");

  scanf("%lf\n",&d.ml);

  printf("%lf\n",d.ml);

  printf("\nEnter the weight force: ");

  scanf("%lf\n",&d.mw);

  printf("%lf\n",d.mw);

  printf("\nEnter the mass (including the mass of the helium): ");

  scanf("%lf\n",&d.mass);

  printf("%lf\n",d.mass);


  /* write all of the data to the disk. */
  fwrite(&d,sizeof(DATASET),1,fhandle);

  printf("FILE WRITTEN\n");

  fcloseall();
  }