#include <iostream>  
  #include <conio.h>  
  #include <stdlib.h>  
  #include <windows.h>  
  #include <ctime>  
     
  using namespace std;  
     
  enum keys  
  {  
      Top = 119,  
      Down = 115,  
      Left = 97,  
      Right = 100  
  };  
     
  int move_Y(int pos_Y, int key_pressed)  
  {  
      switch (key_pressed)  
      {  
          case Top:  
              --pos_Y;  
              break;  
          case Down:  
              ++pos_Y;  
              break;  
      }  
     
      return pos_Y;  
  }  
     
  int move_X(int pos_X, int key_pressed)  
  {  
      switch (key_pressed)  
      {  
          case Left:  
              --pos_X;  
              break;  
          case Right:  
              ++pos_X;  
              break;  
      }  
     
      return pos_X;  
  }  
     
  int main()  
  {  
      COORD cursor = { 0, 0 };  
     
      const int width = 30;  
      const int height = 20;  
     
      char plane[width][height] = {0};  
     
      int pos_Y = height / 2;  
      int pos_X = 0;  
     
      int key_pressed = Right;  
     
      while (true)  
      {  
          Sleep(100);  
     
          if (_kbhit() == true)  
          {  
              key_pressed = _getch();  
          }  
     
          pos_Y = move_Y(pos_Y, key_pressed);  
          pos_X = move_X(pos_X, key_pressed);  
     
          SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), cursor);  
     
          for (int i = 0; i < height; ++i)  
          {  
              for (int j = 0; j < width; ++j)  
              {  
                  plane[j][i] = 0;  
     
                  plane[pos_X][pos_Y] = 1;  
              }  
          }  
     
          for (int i = 0; i < height; ++i)  
          {  
              for (int j = 0; j < width; ++j)  
              {  
                  cout << plane[j][i];  
              }  
              cout << endl;  
          }  
      }  
     
      return 0;  
  }