详解c++菱形继承和多态---下

菱形继承

#include<iostream>

using namespace std;
class Animal
{
public:
	int m_Age;
};
class Sheep : public Animal {};
class Tuo : public Animal {};
class SheepTuo : public Sheep, public Tuo {};
void test()
{
	SheepTuo st;
	st.Sheep::m_Age = 18;
	st.Tuo::m_Age = 20;
	cout << "st.Sheep::m_Age: " << st.Sheep::m_Age << endl;
	cout << "st.Tuo::m_Age: " << st.Tuo::m_Age << endl;

}
int main()
{
	test();

	return 0;
}

菱形继承数据存在二义性问题。

cl /d1 reportSingleClassLayoutSheepTuo test.cpp