类型程序

为了获得类似行为，类型和相关程序（子程序和函数）应放在一个模块中：

例：

module MShape
    implicit none
    private

    type, public::Shape
    private
        integer::radius
    contains
        procedure::set   => shape_set_radius
        procedure::print => shape_print
    end type Shape

contains
    subroutine shape_set_radius(this, value)
        class(Shape), intent(in out) :: self
        integer, intent(in)          :: value

        self%radius = value
    end subroutine shape_set_radius

    subroutine shape_print(this)
        class(Shape), intent(in) :: self

        print *, 'Shape: r = ', self%radius
    end subroutine shape_print
end module MShape

稍后，在代码中，我们可以使用此 Shape 类，如下所示：

! declare a variable of type Shape
type(Shape) :: shape

! call the type-bound subroutine
call shape%set(10)
call shape%print