What is the use of unary operators in C?
Unary operators are operators that take only a single argument. Things like the negative operator: -3, for instance. The negative sign makes the thing negative. It is a different operator than the subtraction operator: 2 – 3, for instance. You’ll use a unary operator pretty much only when it makes sense. Other examples include ++ (prefix or postfix), — (ditto), and the casting operators. In each case, making them binary operators would make no sense.
