RosettaCodeData/Task/Higher-order-functions/Fortran/higher-order-functions-2.f

51 lines
816 B
Fortran

module FuncContainer
implicit none
contains
function func1(x)
real :: func1
real, intent(in) :: x
func1 = x**2.0
end function func1
function func2(x)
real :: func2
real, intent(in) :: x
func2 = x**2.05
end function func2
end module FuncContainer
program FuncArg
use FuncContainer
implicit none
print *, "Func1"
call asubroutine(func1)
print *, "Func2"
call asubroutine(func2)
contains
subroutine asubroutine(f)
! the following interface is redundant: can be omitted
interface
function f(x)
real, intent(in) :: x
real :: f
end function f
end interface
real :: px
px = 0.0
do while( px < 10.0 )
print *, px, f(px)
px = px + 1.0
end do
end subroutine asubroutine
end program FuncArg