RosettaCodeData/Task/Bitmap-Write-a-PPM-file/Fortran/bitmap-write-a-ppm-file.f

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module RCImageIO
use RCImageBasic
implicit none
contains
subroutine output_ppm(u, img)
integer, intent(in) :: u
type(rgbimage), intent(in) :: img
integer :: i, j
write(u, '(A2)') 'P6'
write(u, '(I0,'' '',I0)') img%width, img%height
write(u, '(A)') '255'
do j=1, img%height
do i=1, img%width
write(u, '(3A1)', advance='no') achar(img%red(i,j)), achar(img%green(i,j)), &
achar(img%blue(i,j))
end do
end do
end subroutine output_ppm
end module RCImageIO