Final answer:
In computer science, a temporary variable is used to store the result of a simple expression for temporary use.
Step-by-step explanation:
In computer science, if you have a temporary variable set as the result of a simple expression and nothing more, it means that you have assigned the value of the expression to a variable for temporary use. This temporary variable can be used in further calculations or to simplify a complex expression.
For example, let's say you have the expression a + b, where a = 2 and b = 3. If you don't need to use the result of the expression anywhere else, you can store the result in a temporary variable like temp = a + b and then use temp wherever you need the sum of a and b.