/***************************************************/
/*********** M_BOOK.C + S_BOOK.C  ******************/
#include <stdlib.h>
struct node
 { char name[10];
   int price;
   char pub[15];
 };
extern struct node *add(),*del(struct node *);
extern struct node *load(),*mhdel(struct node *);
/*******************************************************/
/*        函數功能：顯示菜單，選擇菜單                 */
/*        輸入參數：無                                 */
/*        函數輸出：選擇的菜單序號                     */
/*******************************************************/
int menu_select()
 {
  int cn=0;
  printf("        **********************************************\n");
  printf("\t\t    1.  Add a book\n");
  printf("\t\t    2.  Display book library\n");
  printf("\t\t    3.  Query a book\n");
  printf("\t\t    4.  Delete a book\n");
  printf("\t\t    5.  Save to disk\n");
  printf("\t\t    6.  Load from disk \n");
  printf("\t\t    7.  Mohu search\n");
  printf("\t\t    8.  Mohu delete\n");
  printf("\t\t    0.  Exit\n");
  printf("\t***********************************************\n");
  printf("\n  Input(0~8): ");
 for(; ;)
 { scanf("%d",&cn);
   if (cn<0 ||cn>8) printf("Error ! Input again(1~6):");
   else
 break;
 }
 return cn;
 }


void   main(void)
{
  struct node *head=NULL;
  for(; ;)
   { clrscr();
     switch(menu_select())
      {
    case 1: head=add(head);break;
           case 2: print(head);break;
    case 3: search(head);break;
    case 4: head= del(head);break;
    case 5: save(head);break;
    case 6: head=load();break;
    case 7: mhsearch(head);break;
    case 8: head=mhdel(head);break;
    case 0: exit(0);
      }
    }
  }