402.cpp

C++实训教程

/*
	402.cpp
	Written By S.Y.Feng
	demo using new and delete
*/
#include <iostream.h>

class Point // define Point class
{
	int x;   // x and y are private by default
	int y;
  public:
   Point(){ x = 0; y = 0 ;}
   Point(int a,int b=0)  { x = a; y= b; }
	void Display()
	{
		cout << "x = "<< x
		     << " y = "<< y	<< endl;
	}
    ~Point() {cout << "Destruct obj.\n" ;}
};

int main()
{
	Point *p;
	p=new Point(1,3);
	if(!p)
	{  cout << "allocation failure\n";	return -1;  }
	p->Display();
	delete p;
	return 0;
}
/*
x = 1 y = 3
Destruct obj.

*/