Deep Copy constructor function

最新推荐文章于 2024-07-04 21:45:00 发布

原创最新推荐文章于 2024-07-04 21:45:00 发布 · 278 阅读

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本文通过一个具体的例子展示了深拷贝构造函数在C++中的应用。代码中定义了一个名为Node的类，并实现了该类的深拷贝构造函数。通过对Node类实例的创建和拷贝，演示了如何正确地进行资源复制，避免浅拷贝导致的问题。

This is a very good test to show the effect of the deep copy constructor function.

#include <iostream>

using namespace std;

class Node {
public:	
	int value;
	Node *left;
	Node *right;

	Node():value(0),left(NULL),right(NULL) {
	}

	Node(int value) {
		this->value = value;
		left = NULL;
		right = NULL;
	}

	Node(const Node &n) {
		this->value = n.value;
		if(n.left != NULL)
			left = new Node(n.left->value);
		if(n.right != NULL)
			right = new Node(n.right->value);
	}

};


int main() {
	Node *n0 = new Node();
	Node *n1 = new Node(3);
	Node *pN2 = new Node(4);
	pN2->left = n0;
	pN2->right = n1;
	Node n3(*pN2);
	delete pN2;
	delete n0;
	delete n1;

	cout << n3.left->value << endl;
	return 0;
}