The Fortran language standard has undergone several significant upgrades in recent years. This book illustrates many of these improvements through practical solutions to a number of scientific and engineering problems. The many useful features of this book include techniques for modernising algorithms written in Fortran; examples of Fortran interoperating with C or C++ programs, plus using the IEEE floating-point standard for efficiency; and illustrations of parallel Fortran programming using coarrays, MPI and OpenMP. In addition, the codes discussed in the book are available to download via a supplementary website. The book is designed for Fortran programmers seeking to update their skills, and C and C++ programmers who want to understand key software aspects of modern Fortran. It is also suitable for an upper-level undergraduate or early graduate course on advanced numerical scientific computing.