第十一周阅读项目（4）

问题及代码：

#include <iostream>
using namespace std;
class Base
{
public:
    Base(char i) { cout<<"Base constructor. --"<<i<<endl; }
};

class Derived1:virtual public Base
{
public:
    Derived1(char i,char j):Base(i){
        cout<<"Derived1 constructor. --"<<j<<endl;
    }
};

class Derived2:virtual public Base
{
public:
    Derived2(char i,char j):Base(i){
        cout<<"Derived2 constructor. --"<<j<<endl;
    }
};

class MyDerived: public Derived1,public Derived2
{
public:
    MyDerived(char i,char j,char k,char l,char m,char n,char x):
    Derived2(i,j), Derived1(k,l), Base(m), d(n){
        cout<<"MyDerived constructor. --"<<x<<endl;
    }
private:
    Base d;
};
int main()
{
    MyDerived obj('A','B','C','D','E','F','G');
    return 0;
}

 

运行结果：

知识点总结：

学习心得：

构造函数有虚基类时，先构造基类函数，再按照虚基类函数的定义顺序构造虚基类函数，最后构造自己的变量