How many argument pass during declaration of member function in unary operator

Question

not any argument we pass

Answer 1

Can you give an example what you want to know of? Your question is hard to understand

Answer 2

I think that you don't need any arguments for all of the unary overloads, but I haven't checked.
Just try if it compiles.

Answer 3

no argument, because unary operator works on single operand