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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. // book a room for meeting and return the name of the room booked
  4. // History of meetings booked
  5. // api which string meeting_room_scheduled(start,end)
  6. // -->if already booked
  7. //     a.) change room
  8. //     b.) change timings
  9. class Meeting;
  10. class Room;
  11. bool clash(vector<int> a, vector<int> b)
  12. {
  13.     return max(a[0], b[0]) <= min(a[1], b[1]);
  14. }
  15.  
  16. class Meeting
  17. {
  18. private:
  19.     int start, end;
  20.     Room room;
  21.  
  22. public:
  23.     Meeting(int _start, int _end, Room _room)
  24.     {
  25.         start = _start;
  26.         end = _end;
  27.         room = _room;
  28.     }
  29.     vector<int> get_interval()
  30.     {
  31.         vector<int> x = {start, end};
  32.         return x;
  33.     }
  34. };
  35. class Room
  36. {
  37. private:
  38.     string name;
  39.     vector<Meeting> calendar;
  40.  
  41. public:
  42.     Room()
  43.     {
  44.         name = "";
  45.         calendar = vector<Meeting>();
  46.     }
  47.     Room(string _name)
  48.     {
  49.         name = _name;
  50.         calendar = vector<Meeting>();
  51.     }
  52.     string get_name()
  53.     {
  54.         return name;
  55.     }
  56.     vector<Meeting> get_calendar()
  57.     {
  58.         return calendar;
  59.     }
  60.     bool book(int _start, int _end)
  61.     {
  62.         vector<int> new_interval = {_start, _end};
  63.         bool ok = true;
  64.         for (Meeting &i : calendar)
  65.         {
  66.             vector<int> temp = i.get_interval();
  67.             if (clash(temp, new_interval))
  68.                 ok = false;
  69.         }
  70.         if (ok == false)
  71.             return false;
  72.         calendar.push_back(Meeting(_start, _end, this));
  73.         //cout<<calendar.size()<<"\n";
  74.         return true;
  75.     }
  76. };
  77.  
  78. class Scheduler
  79. {
  80. public:
  81.     vector<Room> rooms;
  82.     bool book(int start, int end, string room_id)
  83.     {
  84.         if(start>=end)
  85.             return false;
  86.         for (auto &i : rooms)
  87.         {
  88.             if (i.get_name() == room_id && i.book(start, end))
  89.             {
  90.                 return true;
  91.             }
  92.         }
  93.         return false;
  94.     }
  95. };
  96. void print(Room room)
  97. {
  98.     auto x=room.get_calendar();
  99.     for(auto j: x)
  100.     {
  101.         cout<<j.get_interval()[0]<<" "<<j.get_interval()[1]<<"\n";
  102.     }
  103. }
  104. int main()
  105. {
  106.     Scheduler scheduler;
  107.     for (int i = 0; i < 5; i++)
  108.     {
  109.         string name = "x" + to_string(i);
  110.         scheduler.rooms.push_back(Room(name));
  111.     }
  112.     if (scheduler.book(1, 10, "x1"))
  113.     {
  114.         cout << "[SUCCESS]: Meeting scheduled successfully\n";
  115.     }
  116.     else
  117.     {
  118.         cout << "[ERROR]: Unexpected error\n";
  119.     }
  120.  
  121.     if (scheduler.book(4, 10, "x1"))
  122.     {
  123.         cout << "[SUCCESS]: Meeting scheduled successfully\n";
  124.     }
  125.     else
  126.     {
  127.         cout << "[ERROR]: Unexpected error\n";
  128.     }
  129.     if (scheduler.book(18, 19, "x1"))
  130.     {
  131.         cout << "[SUCCESS]: Meeting scheduled successfully\n";
  132.     }
  133.     else
  134.     {
  135.         cout << "[ERROR]: Unexpected error\n";
  136.     }
  137.     if (scheduler.book(1, 111, "x1"))
  138.     {
  139.         cout << "[SUCCESS]: Meeting scheduled successfully\n";
  140.     }
  141.     else
  142.     {
  143.         cout << "[ERROR]: Unexpected error\n";
  144.     }
  145.     if (scheduler.book(41, 42, "x1"))
  146.     {
  147.         cout << "[SUCCESS]: Meeting scheduled successfully\n";
  148.     }
  149.     else
  150.     {
  151.         cout << "[ERROR]: Unexpected error\n";
  152.     }
  153.     if (scheduler.book(1, 2, "x2"))
  154.     {
  155.         cout << "[SUCCESS]: Meeting scheduled successfully\n";
  156.     }
  157.     else
  158.     {
  159.         cout << "[ERROR]: Unexpected error\n";
  160.     }
  161.  
  162.     if (scheduler.book(4, 10, "x2"))
  163.     {
  164.         cout << "[SUCCESS]: Meeting scheduled successfully\n";
  165.     }
  166.     else
  167.     {
  168.         cout << "[ERROR]: Unexpected error\n";
  169.     }
  170.  
  171.     print(scheduler.rooms[1]);
  172.     cout<<"===\n";
  173.     print(scheduler.rooms[2]);
  174.  
  175.     return 0;
  176. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp:20:10: error: field ‘room’ has incomplete type ‘Room’
     Room room;
          ^~~~
prog.cpp:10:7: note: forward declaration of ‘class Room’
 class Room;
       ^~~~
prog.cpp:23:40: error: ‘_room’ has incomplete type
     Meeting(int _start, int _end, Room _room)
                                   ~~~~~^~~~~
prog.cpp:10:7: note: forward declaration of ‘class Room’
 class Room;
       ^~~~
prog.cpp: In member function ‘bool Room::book(int, int)’:
prog.cpp:72:54: error: no matching function for call to ‘Meeting::Meeting(int&, int&, Room*)’
         calendar.push_back(Meeting(_start, _end, this));
                                                      ^
prog.cpp:23:5: note: candidate: ‘Meeting::Meeting(int, int, Room)’
     Meeting(int _start, int _end, Room _room)
     ^~~~~~~
prog.cpp:23:5: note:   no known conversion for argument 3 from ‘Room*’ to ‘Room’
prog.cpp:16:7: note: candidate: ‘constexpr Meeting::Meeting(const Meeting&)’
 class Meeting
       ^~~~~~~
prog.cpp:16:7: note:   candidate expects 1 argument, 3 provided
prog.cpp:16:7: note: candidate: ‘constexpr Meeting::Meeting(Meeting&&)’
prog.cpp:16:7: note:   candidate expects 1 argument, 3 provided
stdout 
Standard output is empty
https://ideone.com/MuOmlS
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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