| program Hello | |
| integer :: i = 3 !!! a variable !!! | |
| call Sub(Fn(i) + 1) | |
| print *, "The integer is ", i | |
| contains ! a comment | |
| subroutine Sub(x) ! start | |
| print *, "In the subroutine, the integer is ", x | |
| end subroutine Sub ! end | |
| integer function Fn(n) result(y) | |
| print *, "You sent", n, "to the function" | |
| y = n | |
| end function | |
| end program |