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module string_21_fpm_string
integer, public, parameter :: tfc = selected_char_kind('DEFAULT')
contains
function f_string(c_string)
use iso_c_binding
character(len=1), intent(in) :: c_string(:)
character(:), allocatable :: f_string
integer :: i, n
i = 0
do while(c_string(i + 1) /= C_NULL_CHAR)
i = i + 1
end do
n = i
allocate(character(kind=tfc, len=n) :: f_string)
do i = 1, n
f_string(i:i) = c_string(i)
end do
print *, f_string
end function f_string
end module
program string_21
use string_21_fpm_string
use iso_c_binding
implicit none
character(len=1) :: c_string(6)
character(:), allocatable :: f_string_result
c_string(1) = 'H'
c_string(2) = 'e'
c_string(3) = 'l'
c_string(4) = 'l'
c_string(5) = 'o'
c_string(6) = C_NULL_CHAR
f_string_result = f_string(c_string)
print *, f_string_result
if( f_string_result /= "Hello" ) error stop
end program
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