[Dev-C++] differnece between system pause and cin.get()

[Catsquotl <C.a...@hc...>]

Hello,

Obviously there are quite a lot of differences between the two.
However since I am new to c++ and pragramming all together i was wondering 
why cin.get()
works sometimes to pauze the system after a programm and sometimes it won`t.

It seems to me that cin.get() before return 0;
would use less memory than system pause.

greets Catsquotl