Fortran has been the premier language for scientific computing since its introduction in 1957. Fortran originally was designed to allow programmers to evaluate for- las FORmula TRANslation easily on large computers. Fortran compilers are now available on all sizes of machines, from small desktop computers to huge multiproc- sors. The Guide to Fortran 2003 Programming is an informal, tutorial introduction to the most important features of Fortran 2003 (also known as Fortran 03), the latest standard version of Fortran. Fortran has many modern features that will assist the programmer in writing...