In some cases
Single row of 8 cars: the dining car is in car 5,
If two cars are reunited (16 cars), No.5 and 13 are dining cars.
Bicycle has 16 car, and dining car is in 9 car.
In addition, the short-distance train is a bar car, and the dining car is usually just a bar, with a normal second-class seat next to it. There are seats on the long train, but you have to buy something (expensive) to take it, or you will be driven away ... only customers can sit here.
In addition, the dining car will broadcast a reminder in which compartment, and the flight attendant will remind you. You can consult the flight attendant.