Clearing the console window?

[redrifle]

So I've started making a console based calculator that has secret functions and lots of other cool stuff (400 lines of it, too).
But I find myself using SYSTEM("cls"); more times than i can count.
It works but on some systems my program may reach for resources that aren't there when executing this code.
is there an alternative.

[Zhuge]

Try reading this:
http://www.cplusplus.com/articles/4z18T05o/