/* *******************************************************
   * Author: Nikitas N. Karanikolas, Assistant Professor *
   * Creation Date: February 20, 2009                    *
   ******************************************************* */

#include <stdio.h>

typedef struct {
   char name[40];
   char island[20];
   int single_bed;
   int double_bed;
   int twin_bed;
   int gt_double;
   char facilities[100];
} hotel_rec;

char *islands[]={"Patmos", "Arki", "Lipsi", "Leros", "Kalymnos", "Pserimos", "Kos", "Astypalaia", "Nisyros", "Symi", "Tilos", "Chalki", "Rhodes", "Kastelorizo", "Karpathos", "Kasos"};

main () {
   hotel_rec h1;
   int i, k, howmany;
   FILE *fp;

   fp=fopen("hotels.dat","rb");
   if (fp==NULL) {
      printf("Can not open Hotels.Dat for reading data");
      exit(1);
   }

   do {
      printf("\nGive the island (");
      for (i=0; i<sizeof(islands)/sizeof(char *); i++) {
         printf("%d=%s", i+1, islands[i]);
         if (i==sizeof(islands)/sizeof(char *)-1)
            printf(") ");
         else
            printf(", ");
      }
      scanf("%d",&k);
   } while ((k<1) || (k>sizeof(islands)/sizeof(char *)));
   printf("[%s]\n",islands[k-1]);


   do {
      howmany=fread(&h1,sizeof(hotel_rec),1,fp);
      if (howmany<1) break;
      if (strcmp(h1.island,islands[k-1])==0) {
         printf("\nname:%s, facilities:%s\n",h1.name,h1.facilities);
         printf("rooms single:%d, double:%d, twin:%d, greater:%d\n",
            h1.single_bed, h1.double_bed, h1.twin_bed, h1.gt_double);
      }
   } while (1);
   fclose(fp);
}