Now, I don't know anything about C++! And I don't know how variables are introduced to C++; although I intend to learn. However, are Variables not displayed as 'Var'?
Either way, clrscr(), doesn't sound like a Variable - maybe you need a variable to control the clrscr()?
A Knight is sworn to Honour. His heart knows only Virtue. His blade defends the helpless. His might upholds the Weak. His word speaks only truth. His wrath undoes the Wicked.