#include <conio.h>
#include <iostream.h>
#include <dos.h>
#include <stdlib.h>
#include <stdio.h>

class Car
{
private:
  int x;
  int y;
  void draw(int on);

public:
  Car();
  void forward(void);
  void backward(void);
  void left(void);
  void right(void);
};

Car::Car()
{
  x = 20;
  y = 20;
}

void Car::draw(int on)
{
  if(!on) {
    clrscr();
  } else {
    gotoxy(x, y);
    cout << "C";
  }
}

void Car::forward(void)
{
  draw(0);
  if(x < 80)
    x++;
  draw(1);
}

void Car::backward(void)
{
  draw(0);
  if(x > 1)
    x--;
  draw(1);
}

void Car::left(void)
{
  draw(0);
  if(y < 25)
    y++;
  draw(1);
}

void Car::right(void)
{
  draw(0);
  if(y > 1)
    y--;
  draw(1);
}

void main(void)
{
  Car car;

  char c;

  while(1) {
    gotoxy(1, 30);
    c = getch();

    switch(c) {
    case 'f':
      car.forward();
      break;

    case 'b':
      car.backward();
      break;

    case 'r':
      car.right();
      break;

    case 'l':
      car.left();
      break;

    case 'q':
    case 'x':
      exit(0);
      break;
    }
  }
}