Operators in Objective C.

Operator	Function
+	Addition
-	Substraction
/	Division
*	Multiplication
%	Modulus

Relational operators

Operator	Function
>	Greater then
>=	Greater then or equal to
==	Equal to
!=	Not equal to
<=	Less then or equal to
<	Less then

Logical operators

Operator	Function
&&	AND
||	OR
!	NOT