43: };
44:
45: CarPart::CarPart(int year, int partNumber):
46: itsModelYear(year),
47: Part(partNumber)
48: {}
49:
50:
51: // **************** AirPlane Part ************
52:
53: class AirPlanePart : public Part
54: {
55: public:
56: AirPlanePart():itsEngineNumber(1){};
57: AirPlanePart(int EngineNumber, int PartNumber);
58: virtual void Display() const
59: {
60: Part::Display();
61: cout << “Engine No.: “;
62: cout << itsEngineNumber << endl;
63: }
64: private:
65: int itsEngineNumber;
66: };
67:
68: AirPlanePart::AirPlanePart
69: (int EngineNumber, int PartNumber):
70: itsEngineNumber(EngineNumber),
71: Part(PartNumber)
72: {}
73:
74: // **************** Part Node ************
75: class PartNode
76: {
77: public:
78: PartNode (Part*);
79: ~PartNode();
80: void SetNext(PartNode * node)
81: { itsNext = node; }
82: PartNode * GetNext() const;
83: Part * GetPart() const;
84: private:
85: Part *itsPart;
86: PartNode * itsNext;
87: };
88: // PartNode Implementations...
89:
90: PartNode::PartNode(Part* pPart):
91: itsPart(pPart),
92: itsNext(0)564 Day 16
LISTING16.6 continued