Unary Operators
So far, the operators that we've used had a value, typically called an operand, on either side of them: rhs and lhs. Unary operators are those operators, however, that take only one value and modify that. We'll be taking a quick look at minus (-), increment (++), and decrement (--). There are a number of other unary operators (logical complement (!) and bitwise complement (~)), but we'll cover these in the following sections.
Let's start with the minus (-) operator; this allows us to manipulate the sign of a value. It is fairly straightforward—when placed in front of a value, it will turn a negative value positive, and a positive value negative.
Here is an example:
// Negation example.
#include <iostream>
#include <string>
int main()
{
int myInt = -1;
std::cout << -myInt * 5 << std::endl;
myInt = 1;
std::cout <...