exe10.5.cpp

这是C++的一部分练习程序!对初学者有一定的帮助作用。

#include  <iostream.h>
class A
{
  public:
	A(char c)
	{  cout<<"In A con."<<c<<endl;  }
	~A()
	{  cout<<"In A.\n";  }
};
class B:public A
{
  public:
	B(char c1,char c2):A(c1)
	{   cout<<"In B con."<<c2<<endl;  }
	~B()
	{  cout<<"In B.\n";  } 
};
class C:public A
{
  public:
	C(char c1,char c2):A(c1)
	{   cout<<"In C con."<<c2<<endl;  }
	~C()
	{  cout<<"In C.\n";  } 
};
class D:public B,public C
{
  public:
	D(char c1,char c2,char c3,char c4,char c5):B(c1,c2),C(c3,c4),a(c5)
	{  cout<<"In D con."<<c5<<endl;  }
	~D()
	{  cout<<"In D.\n";  } 
  private:
	A a;
};
void main()
{
	D d('A','B','C','D','E');
}