10.6.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()
	{  
		a=0;
		cout<<"Default constructor called."<<a<<endl;
	}
	A(int i)
	{
		a=i;
		cout<<"Constructor callef."<<a<<endl;
	}
	~A()
	{  cout<<"Destructor called."<<a<<endl;  }
	void Print()
	{  cout<<a<<',';  }
	int Geta()
	{  return a;  }
private:
	int a;
};
class B:public A
{
public:
	B()
	{  
		b=0;
		cout<<"Default constructor called."<<b<<endl;
	}
	B(int i,int j,int k):A(i),aa(j)
	{
		b=k;
		cout<<"Constructor called."<<b<<endl;
	}
	~B()
	{  cout<<"Destructor called."<<b<<endl;  }
	void Print()
	{
		A::Print();
		cout<<b<<','<<aa.Geta()<<endl;
	}
private:
	int b;
	A aa;
};
void main()
{
	B bb[2];
	bb[0]=B(7,8,9);
	bb[1]=B(12,13,14);
	for(int i=0;i<2;i++)
		bb[i].Print();
}