pointers are the variable which stores the address of another variable.

A variable declaration is a math or programming term. A variable is an unnamed component. In the problem the wording will declare what the value of the variable is.

You declare a variable when you create it by specifying its datatype and name in a programming language. This tells the compiler or interpreter to allocate memory for the variable. Variables must be declared before they can be used in most programming languages.

a method is a variable

...are important things in programming.

Example:

extern int variable; /* declaration */

int variable= 8; /* definition with initialization */