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program case_07
implicit none
if (test_case('a') /= "a:j") error stop
if (test_case('d') /= "a:j") error stop
if (test_case('l') /= "l:p") error stop
if (test_case('p') /= "l:p") error stop
if (test_case('z') /= "z") error stop
if (test_case('k') /= "not found") error stop
if (test_case('r') /= "not found") error stop
contains
function test_case(c) result(res)
character(len=1), intent(in) :: c
character(len=10) :: res
select case (c)
case ('a' : 'j')
res = "a:j"
print *, 'one of the first ten letters'
case ('l' : 'p')
res = "l:p"
print *, 'one of l, m, n, o, p'
case ('z')
res = "z"
print *, 'one of z'
case default
res = "not found"
print *, 'other characters, which may not be letters'
end select
end function test_case
end program case_07
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