File stuff
	modes (open, close, append, read, rw)
	reading (cin >> i; in.get(); getline(int, buf, '\n'))
	writing (cout << i)
	converting from int
	seekg
	tellg
	get file size
Binary tree stuff
	How
	O(n)
Operator overloading stuff
	cout
	plus
	constructors
	destructors
	can you change precidence, create new ops, change arity
Pointers
	* and &
	strings and null-byte
	new returns??
	delete and delete[]
	reference functions
Assert
Recursion