Fortran is an actively used programming language created in 1957. Fortran (; formerly FORTRAN, derived from Formula Translation) is a general-purpose, imperative programming language that is especially suited to numeric computation and scientific computing. Originally developed by IBM in the 1950s for scientific and engineering applications, Fortran came to dominate this area of programming early on and has been in continuous use for over half a century in computationally intensive areas such as numerical weather prediction, finite element analysis, computational fluid dynamics, computational physics, crystallography and computational chemistry. It is a popular language for high-performance computing and is used for programs that benchmark and rank the world's fastest supercomputers. Read more on Wikipedia...

 63Years Old 150,953Users 1,968Jobs

### Example code from the Hello World Collection:

C     Hello World in Fortran

PROGRAM HELLO
WRITE (*,100)
STOP
100 FORMAT (' Hello World! ' /)
END

### Example code from Linguist:

! Codes/HYCOM/hycom/ATLb2.00/src_2.0.01_22_one/
real onemu, twomu
data onemu/0.0098/
data twomu/1./
data threemu/0.e9/
end

### Example code from Wikipedia:

program average

! Read in some numbers and take the average
! As written, if there are no data points, an average of zero is returned
! While this may not be desired behavior, it keeps this example simple

implicit none

real, dimension(:), allocatable :: points
integer                         :: number_of_points
real                            :: average_points=0., positive_average=0., negative_average=0.

write (*,*) "Input number of points to average:"

allocate (points(number_of_points))

write (*,*) "Enter the points to average:"

! Take the average by summing points and dividing by number_of_points
if (number_of_points > 0) average_points = sum(points) / number_of_points

! Now form average over positive and negative points only
if (count(points > 0.) > 0) then
positive_average = sum(points, points > 0.) / count(points > 0.)
end if

if (count(points < 0.) > 0) then
negative_average = sum(points, points < 0.) / count(points < 0.)
end if

deallocate (points)

! Print result to terminal
write (*,'(a,g12.4)') 'Average = ', average_points
write (*,'(a,g12.4)') 'Average of positive points = ', positive_average
write (*,'(a,g12.4)') 'Average of negative points = ', negative_average

end program average

### Trending Repos

repo stars description
OpenBLAS 2879 OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version.
E3SM 117 Energy Exascale Earth System Model source code.

Last updated August 9th, 2020

Edit Fortran on GitHub