A variable in simple terms is a storage place which has some memory allocated to it. Basically, a variable used to store some form of data. Different types of variables require different amounts of memory, and have some specific set of operations which can be applied on them.
Variable Declaration:
A typical variable declaration is of the form:
type variable_name; or for multiple variables:
type variable1_name, variable2_name, variable3_name;
A variable name can consist of alphabets (both upper and lower case), numbers and the underscore ‘_’ character.
