Variables: Declaring Variables

Variables: Declaring Variables

Applies To: C++Builder 1 or higher
Category: C++ Language

In order to use a variable, you must give the compiler the type name

and variable name. This procedure is called variable declaration. A variable declaration uses the following general form:

type_name variable_name;

The variable type_name specifies a valid data type. variable_name contains the name of the variable. Here's an example:

// An integer variable

int x;

You can declare more than one variable of the same type using commas:

// Two integer variables

int x, y;

Notes

- There is a difference between declaration and definition. A declaration specifies the name and type of the variable, while a definition physically creates it and allocates memory for it.