C++分析类的对象作类成员调用构造与析构函数及静态成员

class Phone {}
class Person
{
    Phone p；
}

#include<iOStream>
using namespace std;
//类对象作为类成员
class Phone
{
public:
	Phone(string P_name)
	{
		p_name = P_name;
        cout<<"Phone类有参构造"<<endl;
	}
    ~Phone()
	{
		cout << "Phone析构" << endl;
	}
	string p_name;
};
class Person
{
public:
	Person(string m_Name,string p_Name):m_name(m_Name),m_PName(p_Name) {
        cout << "Person构造" << endl;}//初始化列表
    ~Person()
	{
		cout << "Person析构" << endl;
	}
	string m_name;
	Phone m_PName;
};
void test01()
{
	Person p1("张三", "华为nova7");
	Person p3(p1);//调用默认拷贝构造函数
	p3.m_name = "李白"; p3.m_PName.p_name = "iphone MAX";
	cout << p1.m_name << "拿着" << p1.m_PName.p_name << endl;
	cout << p3.m_name << "拿着" << p3.m_PName.p_name << endl;
}
int main()
{
	test01();
}

class Person
{
public:
	static int m_A; 
private:
	static int m_B; 
};
int Person::m_A = 10;
int Person::m_B = 10;
void test01()
{
	//静态成员变量两种访问方式
	//1、通过对象
	Person p1;
	p1.m_A = 100;
	cout << "p1.m_A = " << p1.m_A << endl;
	Person p2;
	p2.m_A = 200;
	cout << "p1.m_A = " << p1.m_A << endl; //共享同一份数据
	cout << "p2.m_A = " << p2.m_A << endl;
	//2、通过类名
	cout << "m_A = " << Person::m_A << endl;
	//cout << "m_B = " << Person::m_B << endl; //私有权限访问不到
}
int main() {
	test01();
	system("pause");
	return 0;
}

class Person
{
public:
	int getB()
	{
		return m_B;
	}
	static int m_A;
	int m_C;//非静态成员变量
	//静态成员函数
	static void func()
	{
		m_A = 100;
		//m_C = 20;
		cout << "static void func 的调用" << endl;
	}
private:
	static int m_B;
	static void func2()
	{
		cout << "static void func 的调用" << endl;
	}
};
int Person::m_A = 100;//类外外面初始化
int Person::m_B = 200;
void test03()
{
	//调用方式有两种
	//1、通过对象调用
	Person p;
	p.func();
	//通过类名调用
	Person::func();
	//类外访问不到静态成员函数，静态成员函数也有访问权限
}