"Leonid Gaidai — 100 years old" is a history book that tells about the life and work of the outstanding Ukrainian writer Leonid Mykolayovych Gaidai. The book presents a broad analysis of the writer's work, from his first steps in literature to recognition by the people and critics. The author examines in detail various aspects of Leonid Gaidai's work: his humorous stories, deep psychological novels, children's fairy tales and other genres. The book helps to reveal the writer's inner world, his relationship to life and art. "Leonid Gaidau — 100 years" is an important work for all fans of literature and culture who wish to better understand and appreciate the contribution of this talented writer to Ukrainian literature.