Operators and Expressions
With what you have learned so far, you can assign data to variables. You can even investigate and change the data type of a variable. A programming language isn't very useful, though, unless you can manipulate the data you have stored. Operators are symbols that make it possible to use one or more values to produce a new value. A value that is operated on by an operator is referred to as an operand.
An operator is a symbol or series of symbols that, when used in conjunction with values, performs an action and usually produces a new value.
An operand is a value used in conjunction with an operator. There are usually two ...