![]() When a variable is declared, the memory needed to store its value is assigned a specific location in memory (its memory address). ![]() For example, the memory cell with the address 1776 always follows immediately after the cell with address 1775 and precedes the one with 1777. This way, each cell can be easily located in the memory by means of its unique address. These single-byte memory cells are ordered in a way that allows data representations larger than one byte to occupy memory cells that have consecutive addresses. ![]() This way, the program does not need to care about the physical address of the data in memory it simply uses the identifier or a symbolic name whenever it needs to refer to the variable.įor a C++ program, the memory of a computer is like a succession of memory cells, each one byte in size, and each with a unique address. Earlier, variables have been explained as locations in the computer's memory which can be accessed by their identifier (their name).
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