Some Improvements/Changes:-
1.used vectors instead array during parsing of message at server side.
2.used dictionary instead of 'getoperation' function in calender.cpp
3.'handleclientdata' function moved to calender.cpp from server.cpp
Assignment completed.
No more changes required for this submission.

Signed-off-by: saurav <saurav@saurav-HCL-Desktop.(none)>