#ifndef QUEUE_H //Esli imya otsutstvuet v preprocessore, to tekst budet rabotat`
#define QUEUE_H
struct knot {int x; knot* next;};
void _new_null (knot*& st);
bool _check_empty (knot*& st);
void _add_compon (knot*& st, int x);
void _read_compon (knot*& st, int& x);
void _del_compon (knot*& st);
void _destr (knot*& st);
#endif

#include "queue.h"
#include "width.h"
//struct knot {int x; knot* next};
void _new_null (knot*& st) {st=0;}
bool _check_empty (knot*& st) {return st==0;}
void _add_compon (knot*& st, int x) {
	knot* us= new knot;
	us->x=x;
	us->next=0;
	if (!st) st=us;
	else {
		knot* r=st;
		while (r->next) r=r->next;
		r->next=us;
	}
}
void _read_compon (knot*& st, int& x) {x=st->x;}
void _del_compon (knot*& st) {
	knot* us = st;
	st=st->next;
	delete us;
}
void _destr (knot*& st) {
	while (!_check_empty (st)) _del_compon(st);
}