自考新教材-p184
源程序:
#include<iostream>
using namespace std;
class CB
{
public:
int a;
CB(int x)
{
a=x;
}
void showa()
{
cout<<"Class CB --a="<<a<<endl;
}
};
class CD:public CB
{
public:
int a;
CD(int x,int y):CB(x)
{
a=y;
}
void showa()
{
cout<<"Class CD --a="<<a<<endl;
}
void print2a()
{
cout<<"a="<<a<<endl;
cout<<"CB::a="<<endl;
}
};
int main()
{
CB CBobj(12);
CBobj.showa();
CD CDobj(48,999);
CDobj.showa(); //访问派生类的showa()
CDobj.CB::showa(); //访问基类的showa()
cout<<"CDobj.a="<<CDobj.a<<endl;
cout<<"CDobj.CB::a="<<CDobj.CB::a<<endl;
return 0;
}
运行结果: