1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
module string_08_mod
implicit none
contains
integer elemental function len_trim(string) result(r)
character(len=*), intent(in) :: string
r = len(string)
if (r == 0) return
do while(string(r:r) == " ")
r = r - 1
if (r == 0) exit
end do
end function
function trim(x) result(r)
character(len=*),intent(in) :: x
character(len=len_trim(x)) :: r
integer :: i
do i = 1, len(r)
r(i:i) = x(i:i)
end do
end function
end module
program string_08
use string_08_mod
implicit none
character(*), parameter :: s1 = " A B ", s2 = " "
if (len_trim(s1) /= 4) error stop
if (len_trim(s2) /= 0) error stop
if (len_trim(" ") /= 0) error stop
if (len_trim("") /= 0) error stop
if (len_trim("xx") /= 2) error stop
if (trim(s1) /= " A B") error stop
if (trim(s2) /= "") error stop
if (trim(" ") /= "") error stop
if (trim("") /= "") error stop
if (trim("xx") /= "xx") error stop
if (len(trim(s1)) /= 4) error stop
if (len(trim(s2)) /= 0) error stop
if (len(trim(" ")) /= 0) error stop
if (len(trim("")) /= 0) error stop
if (len(trim("xx")) /= 2) error stop
print *, trim("xx ")
print *, len(trim("xx "))
end program
|
