Write data to file in columns (Fortran)

I need to write some data to file in Fortran 90. How should I use WRITE (*,*) input to have the values grouped in columns? WRITE always puts a new line after each call, that's the problem.

code example:

open (unit = 4, file = 'generated_trajectories1.dat', form='formatted')

do time_nr=0, N
   write (4,*) dble(time_nr)*dt, initial_traj(time_nr)
end do

And now the point is to have it written in separate columns.

Write data to file in columns (Fortran)

4 Answers