C++_练习—继承_多继承

多继承

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多继承：派生类继承多个基类（继承多父类特性）

语法：class <派生类名>: <继承方式1><基类名1> , <继承方式2><基类名2> , ...{
<派生类类体>;
}

#include <iostream>

using namespace std;

class info1 {
public:
    void setter1(int a) {
        num1 = a;
    }

protected:
    int num1;

private:
    int age1;
};

class info2 {
public:
    void setter2(int a) {
        num2 = a;
    }

protected:
    int num2;

private:
    int age2;

};

class info : public info1, public info2 {
public:
    void fun(void) {
        int a;
        a = num1 + num2;
        cout << a << endl;
    }

protected:
    int num3;

private:
    int age3;
};


int main(void)
{
    info text;

    /*   text.num1;   由于多继承方式为public，所以派生类不能直接访问protected与private
         text.age2;
    */


    text.setter1(33);
    text.setter2(44);
    text.fun();

    return 0;
}

 笔记

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