Operating on variables

Operators apply simple operations such as addition and multiplication to operands such as numbers. They usually return a new value that is the result of the operation.

Most operators are binary, meaning that they work on two operands, as shown in the following pseudocode:

    var resultOfOperation = FirstOperand operator SecondOperand; 

Some operators are unary, meaning they work on a single operand.

A ternary operator works on three operands.

Experimenting with unary operators

Two common unary operators are used to increment ++ and decrement -- a number.

In Visual Studio 2017, from the View menu, choose Other Windows, and then C# Interactive.

Note

In Visual Studio Code, create a new console application and write your own statements to output the results using Console.WriteLine().

Enter the following code:

> int i = 3;
> i
3

Note that when you enter a full statement ending in a semicolon, it is executed when you press Enter.

The first statement uses the assignment operator...