?? constructor1.cpp
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//: C06:Constructor1.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// Constructors & destructors
#include <iostream>
using namespace std;
class Tree {
int height;
public:
Tree(int initialHeight); // Constructor
~Tree(); // Destructor
void grow(int years);
void printsize();
};
Tree::Tree(int initialHeight) {
height = initialHeight;
}
Tree::~Tree() {
cout << "inside Tree destructor" << endl;
printsize();
}
void Tree::grow(int years) {
height += years;
}
void Tree::printsize() {
cout << "Tree height is " << height << endl;
}
int main() {
cout << "before opening brace" << endl;
{
Tree t(12);
cout << "after Tree creation" << endl;
t.printsize();
t.grow(4);
cout << "before closing brace" << endl;
}
cout << "after closing brace" << endl;
} ///:~
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