t4.cpp

利用类及派生类在屏幕上输出英语问好提示

#include<iostream.h>
 class  A
  {  
int a;
public:
  void seta(int x) { a=x; }
  void showa() { cout<<a<<endl; }
};
class B
{
int b;
public:
   void setb(int x) { b=x; }
   void showb() { cout<<b<<endl; }
};
   class C :public A ,private  B
{
  int c;
  public:
   void setc(int x,int y, int z)
    {
      c=z;
     seta(x);
     setb(y);
}
void showc() { cout<<c<<endl;}
};
   void main()
{
  C  t;
  t.seta(1); 
  t.showa();
  t.setc(1,2,3);
  t.showc();
}