5. Bus Reservation Server

5. Bus Reservation Server
	Chapter 11. Group Assignments - Homeworks

Bus Reservation Server
This program should implement a server that is able to do bookings for a bus service company. The server has to hold a database (free implementation) with all buses' routes. This database has to hold at least the following information for each route:
For instance:
```
Route 1:Initial City  -  Stopovers      -      Final Destination
 Rib. Preto   S.Carlos, Araraq.   Catanduva
Bus1         6:00          7:00     7:30         8:30
Bus2        11:00         12:00    12:30      13:30
Bus3        15:00         16:00    16:30      17:30

Bus1:
Seat     Rib. Preto     S.Carlos, Araraq.   Catanduva
  01            X--------Ocupied-------X
  02                                  X-------Ocupied-----X
  03            X---Ocupied---X        X--Ocupied-X
  04          
```
The client should be able to execute at least the following commands:
list1 <Departure City> <Destination> : It shows the available buses and number of seats in each bus connecting the two destinations:
```
list1 RibPreto SCarlos

Bus1   6:00   7:00   12 seats
Bus2  11:00  12:00    4 seats
Bus3  15:00  16:00    8 seats
```
list2 <Departure City> <Destination> <Bus>: It shows the available seats in a particular bus connecting the two destinations:
```
list2 RibPreto SCarlos Bus2

Bus2  2 34 35 40
```
get <Departure City> <Destination> <Bus> <seat>: It books a particular seat for a passenger (It can return OK or failure):
```
get RibPreto SCarlos Bus2 34

OK: RibPreto 11:00 SCarlos 12:00 Bus2 34
```
cancel <Departure City> <Destination> <Bus> <seat>: It cancels a particular seat for a passenger (It can return OK or failure):
```
cancel RibPreto SCarlos Bus2 34

OK: RibPreto 11:00 SCarlos 12:00 Bus2 34           
```
The server should be able to book and to cancel slots. If a seat is booked between Rib. Preto and S. Carlos, it should be able to book the same seat between S. Carlos and Catanduva.
NOTE: The program must use shared memory and threads in its implementation (take care to protected shared memory areas with mutex and/or semaphores). The program does not need to keep information on files, it does not have to be persistent.


4. Chat Server		6. Linux Threads Seminar