📄 optstring_1.f90
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! Test optional character arguments. We still need to pass a string! length for the absent argumentsprogram optional_string_1 implicit none call test(1, "test"); call test(2, c=42, b="Hello World")containssubroutine test(i, a, b, c) integer :: i character(len=4), optional :: a character(len=*), optional :: b integer, optional :: c if (i .eq. 1) then if (a .ne. "test") call abort else if (b .ne. "Hello World") call abort if (c .ne. 42) call abort end ifend subroutineend program
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