Unary operators are operators that have only a single operand -- that
is, they operate on only one object. The following are (or can be) all
unary operators:
++ -- + -
The order of evaluation of unary operators is from right to left, so an
expression like:
*ptr++;
would perform the ++ before the *. (The ++
operator will be introduced in the next section, and the *
operator will be introduced in the next chapter. See Pointers.)
