#ifndef I
#define I


class breakpoint
	{
		protected :
			breakpoint * left;		//pointer to previous item
			breakpoint * right;		//pointer to next item

		public:
			int value;
			breakpoint() {};
			breakpoint(int);
		        virtual ~breakpoint();			
			breakpoint * link(breakpoint *);
			breakpoint * unlink(void);
			breakpoint * getleft(){return left;}
			breakpoint * getright(){return right;}
			virtual breakpoint * insertbreakpoint(breakpoint * bp) {return bp;}
			int getbreakpoint(){return value;}
			void setbreakpoint(int);
			
	};

#endif