fortran binary

Fortran is a programming language that can be used to write binary files. Binary files are files that contain non-textual data, such as images, audio, or executable code.

To write binary files in Fortran, you can use the "OPEN" statement with the "ACCESS='STREAM'" option. This allows you to read and write binary data to and from the file.

Here's an example program that writes binary data to a file:

program write_binary_file
  implicit none

  integer :: i, n
  real :: x(100)
  character(len=20) :: filename
  integer, parameter :: file_unit = 10
  
  ! Set the file name
  filename = 'data.bin'

  ! Open the file for writing
  open(unit=file_unit, file=filename, access='stream', form='unformatted', status='replace')

  ! Write some data to the file
  n = 100
  do i = 1, n
    x(i) = i**2
  end do
  write(file_unit) n, x(1:n)

  ! Close the file
  close(file_unit)

end program write_binary_file

This program writes an array of 100 real numbers to a binary file named "data.bin". The first value written to the file is the number of elements in the array, followed by the array itself. The "form='unformatted'" option tells Fortran to write the data in binary format.

To read binary files in Fortran, you can use the same "OPEN" statement with the "ACCESS='STREAM'" option, and then use the "READ" statement to read the data from the file.