训练1-4

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问题及代码：

/* *copyright(c) 2016烟台大学计算机学院 *All rights reserved *文件名称：test.cpp *作者：杨昊 *版本：v6.0 * *问题描述：　训练1-2 *输入描述：无 *程序输出：*/#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;}

结果及总结：

0 0