Computer History Notes - Herong's Tutorial Notes - v3.13, by Herong Yang
Fortran 90 - Example Program Code
This section provides a simple example program code of Fortran 90 language.
In Fortran 90, many major features were added:
Here is a simple example code of Fortran 90 that swaps values in two arrays of real numbers (Source: www.wikipedia.org):
subroutine swap_real(a1, a2) implicit none ! Input/Output real, intent(inout) :: a1(:), a2(:) ! Locals integer :: lb(1), ub(1) ! Lower and Upper bounds integer :: i real :: a ! Get bounds lb = lbound(a1) ub = ubound(a1) ! Swap do i = lb(1), ub(1) a = a1(i) a1(i) = a2(i) a2(i) = a end do end subroutine swap_real
Table of Contents
2002 - .NET Framework Developed by Microsoft
1995 - PHP: Hypertext Preprocessor Created by Rasmus Lerdorf
1995 - Java Language Developed by Sun Microsystems
1991 - WWW (World Wide Web) Developed by Tim Berners-Lee
1991 - Gopher Protocol Created by a University of Minnesota Team
1984 - X Window System Developed a MIT Team
1984 - Macintosh Developed by Apple Inc.
1983 - "Sendmail" Mail Transfer Agent Developed by Eric Allman
1979 - The Tcsh (TENEX C Shell) Developed by Ken Greer
1978 - Bash (Bourne-Again Shell) Developed by Brian Fox
1978 - The C Shell Developed by Bill Joy
1977 - The Bourne Shell Developed by Stephen Bourne
1977 - Apple II Designed by Steve Jobs and Steve Wozniak
1976 - vi Text Editor Developed by Bill Joy
1974 - Internet by Vinton Cerf
1972 - C Language Developed by Dennis Ritchie
1971 - FTP Protocol Created by Abhay Bhushan
1970 - UNIX Operating System Developed by AT&T Bell Labs
►1957 - FORTRAN Language Developed by IBM
Storing FORTRAN Program Code on Punch Cards
FORTRAN 66 - Example Program Code
FORTRAN 77 - Example Program Code
g77 - GNU Project FORTRAN Compiler