Fortran Programming
سایتی به زبان انگلیسی جهت آموزش فرترن (لینک)
https://www.onlinegdb.com/online_fortran_compiler
WRITE(6,'("+",I5)') I
خلاصه ای از دستورات فرترن برگرفته از کتاب
"A First Course in Scientific Computing" by RUBIN H. LANDAU ,Princeton University Pressتعریف تابع با خروجی آرایه:
Module MatrixOp
! ======================================================
! Function returning an array: matrix * vector
! ======================================================
contains
function MatVecMult(A, v) result (w)
implicit none
real, dimension(:,:), intent(in) :: A
real, dimension(:), intent(in) :: v
real, dimension( SIZE(A,1) ) :: w !! Define result using input param
integer :: i, j
integer :: N
N = size(v)
w = 0.0 !! clear whole vector
DO i = 1, N
w = w + v(i) * A( :, i )
END DO
end function
end module
! ======================================================
program Main
use MatrixOp
implicit none
real, dimension( 3, 3 ) :: A
real, dimension( 3 ) :: v1, v2
integer :: i, j
DATA A / 1, 1, 2, 1, 2, 3, 1, 1, 1 /
DATA v1 / 1, 1, 1 /
v2 = MatVecMult(A, v1)
print *, "A = "
DO i = 1, 3
print *, A(i, :)
END DO
print *
print *, "v1 = ", v1
print *, "v2 = A * v1 = ", v2
end program