we mostly do use current date n time to make it act like a timestamp..... it can be used to calulate to total time requried 4 processing a particilar function or ne other code.... we can do tat by subtracting the current time before the code frm the current time after the code.. so wat u get is the time it took to run the code in millisec.... cos in C/C++ we get time stamp in millisec.....