Bozzano G Luisa 
Introduction to Programming with Specifications [PDF ebook] 

A feature of modern advanced computing is the functional approach to programming. In this book, the authors present an introduction to the mathematics which underline functional programming, emphasizing the understanding of definition and specification–a prerequisite of good programming and problem solving with a computer. The book is self-contained, requiring a low level of mathematical sophistication and may be used as an introduction to the mathematics of programming.Provides an introduction to the functional approach to programming**Emphasizes the problem to be solved, not the programming language**Takes the view that all computer programs are a definition of a function**Includes exercises for each chapter**Can be used as a pre-programming language introduction to the mathematics of computing.