C++虚基类 类接口应用示例程序

#include <string>

using namespace std;

struct Sres
{
    string content;
    int value;
};

class BaseABC
{
public:
    BaseABC(string name = "base"):
        name(name)
    { }
    BaseABC()
    { }
    ~BaseABC()
    { }
    string name;
    virtual Sres Skill() const = 0;
};

class My:public BaseABC
{
public:
    My(string name) :
        BaseABC(name)
    {
    
    }
    virtual Sres Skill() const;
};
Sres My::Skill() const
{
    return {"my",100};
}

class Son :public BaseABC
{
public:
    Son(string name) :
        BaseABC(name)
    {

    }
    virtual Sres Skill() const;
};
Sres Son::Skill() const
{
    return { "son", 80 };
}

void Show(const BaseABC& abc)
{
    auto tmp = abc.Skill();
    cout << abc.name << ":" << tmp.content + "  " << tmp.value << endl;
}

int main()
{
    My aa(string("cxl"));
    Son bb(string("son"));
    Show(aa);
    Show(bb);
}