/* *******************************************************
   * 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; /* greater than double room */
   char facilities[100];
} hotel_rec;

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

void upper(char *str) {
   int i;
   for (i=0; i<strlen(str); i++)
      if ((str[i] >= 97) && (str[i] <= 122)) str[i] = str[i] - 32;
}

void blank(char buffer[], int size) {
   int i;
   for (i=0; i<size; i++) buffer[i]=0;
}

main () {
   hotel_rec h1;
   char tmp_str[40];
   int i, k, howmany;
   FILE *fp;

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

   do {
      blank(&h1,sizeof(hotel_rec));
      printf("\nGive hotel name: ");
      gets(h1.name);
      printf("[%s]\n",h1.name);
      strcpy(tmp_str,h1.name);
      upper(tmp_str);
      if (strcmp(tmp_str,"QUIT")==0) break;
      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);
         /* printf("[%d]\n",k); */
      } while ((k<1) || (k>sizeof(islands)/sizeof(char *)));
      printf("[%s]\n",islands[k-1]);
      strcpy(h1.island,islands[k-1]);
      gets(tmp_str); /* garbage collection */
      printf("\nGive number of single, double, twin-bed and "
             "greater-than-double rooms: ");
      scanf("%d %d %d %d", &h1.single_bed, &h1.double_bed,
            &h1.twin_bed, &h1.gt_double);
      printf("[%d] [%d] [%d] [%d]\n", h1.single_bed,
             h1.double_bed, h1.twin_bed, h1.gt_double);
      gets(tmp_str); /* garbage collection */
      printf("\nDescribe facilities: ");
      gets(h1.facilities);
      printf("[%s]\n",h1.facilities);
      howmany=fwrite(&h1,sizeof(hotel_rec),1,fp);
      /* printf("\nhowmany=%d\n", howmany); */
   } while (1);
   fclose(fp);
}