Sams Teach Yourself C++ in 21 Days

Templates 673

19

96: for (int i = 0; i < itsSize; i++)

97: pType[i] = rhs[i];

98: return *this;

99: }

100:

101: // driver program

102: int main()

103: {

104: Array<int> theArray; // an array of integers

105: Array<Animal> theZoo; // an array of Animals

106: Animal *pAnimal;

107:

108: // fill the arrays

109: for (int i = 0; i < theArray.GetSize(); i++)

110: {

111: theArray[i] = i*2;

112: pAnimal = new Animal(i*3);

113: theZoo[i] = *pAnimal;

114: }

115:

116: int j;

117: for (j = 0; j < theArray.GetSize(); j++)

118: {

119: cout << “theZoo[“ << j << “]:\t”;

120: theZoo[j].Display();

121: cout << endl;

122: }

123: cout << “Now use the friend function to “;

124: cout << “find the members of Array<int>”;

125: Intrude(theArray);

126:

127: cout << endl <<”Done.” << endl;

128: return 0;

129: }

theZoo[0]: 0

theZoo[1]: 3

theZoo[2]: 6

theZoo[3]: 9

theZoo[4]: 12

theZoo[5]: 15

theZoo[6]: 18

theZoo[7]: 21

theZoo[8]: 24

theZoo[9]: 27

Now use the friend function to find the members of Array<int>

*** Intrude ***

OUTPUT

LISTING19.3 continued