RosettaCodeData/Task/Binary-digits/Fortran/binary-digits.f

58 lines
990 B
Fortran

!-*- mode: compilation; default-directory: "/tmp/" -*-
!Compilation started at Sun May 19 23:14:14
!
!a=./F && make $a && $a < unixdict.txt
!f95 -Wall -ffree-form F.F -o F
!101
!110010
!10001100101000
!
!Compilation finished at Sun May 19 23:14:14
!
!
! tobin=: -.&' '@":@#:
! tobin 5
!101
! tobin 50
!110010
! tobin 9000
!10001100101000
program bits
implicit none
integer, dimension(3) :: a
integer :: i
data a/5,50,9000/
do i = 1, 3
call s(a(i))
enddo
contains
subroutine s(a)
integer, intent(in) :: a
integer :: i
if (a .eq. 0) then
write(6,'(a)')'0'
return
endif
do i = 31, 0, -1
if (btest(a, i)) exit
enddo
do while (0 .lt. i)
if (btest(a, i)) then
write(6,'(a)',advance='no')'1'
else
write(6,'(a)',advance='no')'0'
endif
i = i-1
enddo
if (btest(a, i)) then
write(6,'(a)')'1'
else
write(6,'(a)')'0'
endif
end subroutine s
end program bits