设计模式——原型模式

#include <iostream>
#include <string>
using namespace std;

class Person
{
public:
    virtual void show() = 0;
    virtual Person* clone() = 0;   // 克隆  复制
};

class Student : public Person
{
public:
    Student(int id = 0, string name = "")
    {
        this->id = id;
        this->name = name;
    }

    Person* clone()
    {
        Student *s = new Student;
        *s = *this;
        return s;
    }
    void show()
    {
        cout <<"id = " << id << ", name = " << name << endl;
    }
private:
    int id;
    string name;
};

void func(Person *p)
{
    // Student s = *p;

    Person *p1 = p->clone();
    p1->show();
}

int main()
{
    Student s1(1, "小明1");
    Student s2 = s1;   // 拷贝构造
    Student s3;
    s3 = s1;   // 赋值运算符

    func(&s1);

    return 0;
}