1、
#include <iostream>
using namespace std;
class A
{
private:
int x;
protected:
int y;
public:
int z;
void setx(int i)
{
x=i;
}
int getx()
{
return x;
}
};
class B:public A
{
private:
int m;
protected:
int n;
public:
int p;
void setvalue(int a,int b,int c,int d,int e,int f)
{
setx(a);
y=b;
z=c;
m=d;
n=e;
p=f;
}
void display()
{
cout<<"x="<<getx()<<endl;
// cout<<"x="<<x<<endl;//基类中x为私有变量，派生类中成员函数不能直接访问
cout<<"y="<<y<<endl;//基类中y为保护变量，派生类中成员函数可以直接访问
cout<<"m="<<m<<endl;
cout<<"n="<<n<<endl;
}
};
int main()
{
B obj;
obj.setvalue(1,2,3,4,5,6);
obj.display();
//cout<<"y="<<obj.y<<endl;基类中y为保护变量，派生类的对象不能直接访问
cout<<"z="<<obj.z<<endl;
cout<<"p="<<obj.p<<endl;
return 0;
}#include <iostream>
using namespace std;
c
