int main()
{
      int a;
    printf("1. Read input from text file\n");
    printf("2. Print total number of gates\n");
    printf("3. Print total number of isles\n");
    printf("4. Find total number of direct and undirect connected cells of a walkable cell\n");
    printf("5. Find whether or not can the treasure cell reachable\n");
    printf("6. Exit program\n");
      scanf("%d",&a);
      switch(a)
      {
            case 1:
            printf("mot\n");
            break;
            case 2:
            printf("hai\n");
            break;
            case 3:
            printf("ba\n");
            break;
            case 4:
            printf("bon\n");
            break;
            case 5:
            printf("nam\n");
            break;
            case 6:
            printf("Exit\n");
            break;
            default:
            break;
      }
      return 0;
}