Programming Techniques & Algorithms

In Computer Science, a pointer is a programming language object, whose value refers directly to (or “points to”) another value stored elsewhere in the computer memory using its address. For high-level programming languages, pointers effectively take the place of general purpose registers in low-level languages such as assembly language or machine code, but may be in available memory. A pointer references a location in memory, and obtaining the value stored at that location is known as dereferencing the pointer. As an analogy, a page number in a book’s index could be considered a pointer to the corresponding page; dereferencing such a pointer would be done by flipping to the page with the given page number.

Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. The word Steganography combines the Greek words «Στεγανός», meaning “Covered, Concealed, or Protected”, and «Γράφειν» meaning “Writing”.