6.28 洗刷刷 oj 继承 private protocted

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题目要求：

//******************** begin ********************

#include <iostream>

using namespace std;

class A

{

private:

int a,b;

public:

A(int aa, int bb) {a=aa; b=bb;}

void printA()

{

cout<<"a: "<<a<<" b: "<<b<<endl;

}

class B: public A

{

int c;

public:

B(int aa, int bb, int cc){a=aa;b=bb;c=cc;}

void printB()

{

cout<<"a: "<<a<<" b: "<<b<<" c: "<<c<<endl;

}

};

//********************* end ********************

int main()

{

int a1, a2;

int b1, b2, b3;

cin>>a1>>a2;

cin>>b1>>b2>>b3;

A a(a1,a2);

B b(b1,b2,b3);

a=b;

a.printA();

b.printB();

return 0;

}

输入

用于初始化对象的5个整数

输出

调用 a.printA();和b.printB();产生输出

样例输入

1 23 4 5

样例输出

a: 3 b: 4a: 3 b: 4 c: 5#include <iostream>using namespace std;class A{protected:    int a,b;public:    A(int aa, int bb) {a=aa; b=bb;}    void printA()    {        cout<<"a: "<<a<<" b: "<<b<<endl;    }};class B: public A{    int c;public:    B(int aa, int bb, int cc):A(aa,bb),c(cc){}    void printB()    {        cout<<"a: "<<a<<" b: "<<b<<" c: "<<c<<endl;    }};//********************* end ********************int main(){    int a1, a2;    int b1, b2, b3;    cin>>a1>>a2;    cin>>b1>>b2>>b3;    A a(a1,a2);    B b(b1,b2,b3);    a=b;    a.printA();    b.printB();    return 0;}private：私有的protocted :受保护的

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