If you need a condition in the program, then if there should be a few more embedded conditions in it, then if you can't do without them at all, then if your time allows you, then provide the program with concessions and comments, otherwise it will be very difficult to read such a text, otherwise do it later - when you are more free, otherwise minimize the number of conditions, otherwise do not overwhelm the code with conditions, otherwise you will do without conditions at all.