#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
using namespace std;

//void test01()
//{
//    char a = ‘a‘;
//    //dynamic_cast非常严格 失去精度 或者不安全 都不可以转换
//    double d = dynamic_cast<double>(a); //error 
//}

class Base 
{
    virtual void func(){}
};
class Child :public Base 
{
    virtual void func(){}
};
class Other {};

void test02()
{
    Base* base = NULL;
    Child* child = NULL;

    //Child转Base 安全
    Base* b2 = dynamic_cast<Base*>(child);

    //Base转为Child 不安全
    //Child* c2 = dynamic_cast<Child*>(base);


    //dynamic_cast如果发生了多态，那么可以让基类转成派生类，向下转换
    Base* base2 = new Child;
    Child* child2 = dynamic_cast<Child*>(base2);
}
int main()
{

    system("Pause");
    return 0;
}