How do you declare a variable in a computer?

How do we declare a variable?

To declare (create) a variable, you will specify the type, leave at least one space, then the name for the variable and end the line with a semicolon ( ; ). Java uses the keyword int for integer, double for a floating point number (a double precision number), and boolean for a Boolean value (true or false).

What is declaring a variable in computer?

In computer programming, a declaration is a language construct specifying identifier properties: it declares a word's (identifier's) meaning. Declarations are most commonly used for functions, variables, constants, and classes, but can also be used for other entities such as enumerations and type definitions.

How do you declare and use variables?

How to declare a variable:1Choose the "type" you need.2Decide upon a name for the variable.3Use the following format for a declaration statement: ... 4You may declare more than one variable of the same type by separating the variable names with commas.

How do you name a variable in a computer?

Variable naming rules1Consistency: 'name' is not the same as 'Name' or 'NAME'.2Spacing: variable names should not have a space in them. Use underscores or camelCase instead, eg total_money; totalMoney).3Digits: variable names should not start with a digit.