Merge pull request #1 from YiGOffer/重载

Create 重载-指针运算符->

重载-指针运算符->

@@ -0,0 +1,87 @@
+#include<iostream>
+#include<string>
+using namespace std;
+//新建一个Person类
+class Person
+{
+
+public:
+	Person()
+	{
+
+	};
+	Person(int C) 
+	{
+		this->m_A = C;
+	};
+	Person(int A, int B) :m_A(A), m_B(B)
+	{
+
+	}
+	~Person()
+	{
+		cout << "P的析构函数调用" << endl;
+
+	}
+
+
+
+void showm_A()
+{
+	cout << "m_A=" << m_A << endl;
+}
+private:
+	int m_A;
+	int m_B;
+
+};
+//新建一个智能指针类
+class  smartPoint
+{
+public:
+	//构造函数
+	smartPoint(Person * p) 
+	{
+		this->m_Person = p;
+
+	}
+
+	~ smartPoint()
+	{
+		cout << "S的析构函数调用" << endl;
+
+		if(this->m_Person)
+		{
+			delete m_Person;
+			m_Person = NULL;
+
+		}
+	}
+	//运算符->的重载，为了让sp->showm_A（）能成功调用，只需让其返回一个指向Person 类型的指针。
+	Person* operator->()
+	{
+		return this->m_Person;
+	}
+private:
+	Person * m_Person;
+
+};
+
+
+
+
+void test01()
+{
+	Person *p1=new Person(20);
+	(*p1).showm_A();//解引用的调用
+	p1->showm_A();//使用-> 直接不用解引用 用指针就可调用showA函数
+	//delete p1;
+
+	//用智能指针进行释放内存
+	smartPoint sp(p1);
+	sp->showm_A();
+}
+int main ()
+{
+	test01();
+}