Sams Teach Yourself C++ in 21 Days

In Review 495

119: PartNode * PartNode::GetNext() const

120: {

121: return itsNext;

122: }

123:

124: Part * PartNode::GetPart() const

125: {

126: if (itsPart)

127: return itsPart;

128: else

129: return NULL; //error

130: }

131:

132: // **************** Part List ************

133: class PartsList

134: {

135: public:

136: PartsList();

137: ~PartsList();

138: // needs copy constructor and operator equals!

139: Part* Find(int & position, int PartNumber) const;

140: int GetCount() const { return itsCount; }

141: Part* GetFirst() const;

142: void Insert(Part *);

143: void Iterate() const;

144: Part* operator[](int) const;

145: private:

146: PartNode * pHead;

147: int itsCount;

148: };

149:

150: // Implementations for Lists...

151:

152: PartsList::PartsList():

153: pHead(0),

154: itsCount(0)

155: {}

156:

157: PartsList::~PartsList()

158: {

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LISTINGR2.1 continued

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