omain.cpp-Thisfilecontainsthemainroutine.oCity.h-ThisdefinesclassCity.oService.h-ThisdefinesclassService.oRailSystem.h-Thisdeclaresaclasstorepresenttherailsystem.oRailSystem.cpp-ThisisapartialimplementationofclassRailSystem.oservices.txt-Thisfilecontainsdatathatdefinesther