Textbook in PDF format

This book is primarily intended for college students who are learning how to program in Fortran 90, and is a natural successor to the similar book about FORTRAN 77 programming. We have written it in such a way as to encourage readers to utilize fully the power and flexibility of Fortran 90 from the outset, while also making them aware of important older constructs which remain in the language for compatibility with earlier versions. These older constructs will often be found in existing programs, or in programs written by Fortran programmers who learned their programming in an earlier age and have not yet fully adapted to the current style and capability of Fortran 90.
Every chapter of the book follows a similar structure, and is introduced by a short overview of the topic covered in that chapter, with an emphasis on the class of problems that it helps to solve and the key techniques that are being introduced. At several points within each chapter there are short self-test exercises which should be used to check and to reinforce the material covered thus far.
Every chapter also includes a number of worked examples which illustrate both the features of the language that have most recently been introduced and, equally importantly, a recommended approach to the design and development of programs. Finally, at the end of each chapter, before the programming exercises for that chapter, there is a brief checklist of the main features of the chapter, together with a summary of all new syntax introduced