C++中多重继承问题及解决方法概述

#include <iOStream>
using namespace std;

class A {
public:
    void foo()
    {
        cout << "A::foo()" << endl;
    }
};

class B {
public:
    void foo()
    {
        cout << "B::foo()" << endl;
    }
};

class C : public A, public B {
public:
    void test()
    {
        A::foo();   // 调用A类的foo函数
        B::foo();   // 调用B类的foo函数
    }
};


int main()
{
    C c;
    c.test();

    return 0;
}

#include <iostream>
using namespace std;

class A {
public:
    virtual void foo()
    {
        cout << "A::foo()" << endl;
    }
};

class B : virtual public A {
public:
    void foo()
    {
        cout << "B::foo()" << endl;
    }
};

class C : virtual public A {
public:
    void foo()
    {
        cout << "C::foo()" << endl;
    }
};

class D : public B, public C {
public:
    void test()
    {
        foo();   // 调用C类的foo函数
    }
};


int main()
{
    D d;
    d.test();

    return 0;
}