The Lenna (or Lena) picture is one of the most widely used standard test images used for compression algorithms.'lena' or 'lenna' is a digitized Playboy centerfold, from November 1972. (Lenna is the spelling in Playboy, Lena is the Swedish spelling of the name.) Lena Soderberg (ne Sjööblom)
by Alex Rest, describes some problems, bugs and technique solutions that correspond to using pointers. This article would be useful for beginners and programmers that are using other programming languages and are starting to study C and C++ now.