Which method of communication is Raoul using if he sends an email to one of his subordinates with deadlines and guidelines on how to complete a specific task

Using a conditional expression, write a statement that increments numusers if updatedirection is 1, otherwise decrements numusers. ex: if numusers is 8 and updatedirection is 1, numusers becomes 9; if updatedirection is 0, numusers becomes 7.