Hello, Fortran

对Fortran的亲切问候！

1. 简单问候

program hello
    !
    ! Hello, Fortran
    !
    implicit none
    
    write(*,*) "Hello, Fortran !"
end program hello

2. 循环问候

progran hello
    !
    ! Hello, Fortran
    !
    implicit none
    integer :: i
    do i = 1, huge(i)  ! 就不写得太暴力，给个爱的极限吧！
        write(*,*) "Hello, Fortran !"
    end do
end program hello

3. 并行问候

program hello
    !
    ! Hello, Fortran
    !
    use omp_lib
    implicit none
    integer :: nthr, i
    
    nthr = omp_get_max_threads()
    call omp_set_num_threads(nthr) ! use all the brain cells
    !$omp parallel do
    do i = 1, huge(i)
        ! Crazy but polite
        write(*,"('Hello, Fortran ! I''m thread ', I0, /)") omp_get_thread_num()
    end do
end program hello