void View_DB()
  //procedura prosmotra BD
   {int i;
    Read_DB(n,p);
    printf("--------------------------------------------------------------------------------");
    printf("|  Tovar   | Obyem partii | Stoimost ed. | Kol-vo prodannyx ed. | Data postupl.|");
    printf("--------------------------------------------------------------------------------");
    for (i=0;i<n-1;i++)
     {printf("|%10s|%14f|%14f|%22d|%14s",a[i].vid_tov,a[i].obyem,a[i].st_ed,a[i].kol_pr_ed,a[i].data);
      cout<<'|';
      printf("--------------------------------------------------------------------------------");
     }
    cout<<endl;
   }


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    cout<<n<<endl;
    for (i=0;i<n-1;i++) {
        cout<<i<<endl;