棋盘覆盖问题

<1>问题：棋盘覆盖问题

<2>代码：

#include<iostream>
using namespace std;
int Board[4][4] = {0};
int tile = 1;
void ChessBoard(int tr,int tc,int dr,int dc,int size)
{
 if(size == 1)
  return;
 int t = tile++;
 int s = size/2;
 if(dr<tr+s && dc<tc+s)
  ChessBoard(tr,tc,dr,dc,s);
 else
 {
  Board[tr+s-1][tc+s-1] = t;
  ChessBoard(tr,tc,tr+s-1,tc+s-1,s);
 }

 if(dr<tr+s && dc>=tc+s)
  ChessBoard(tr,tc+s,dr,dc,s);
 else
 {
  Board[tr+s-1][tc+s] = t;
  ChessBoard(tr,tc+s,tr+s-1,tc+s,s);
 }

 if(dr>=tr+s && dc<tc+s)
  ChessBoard(tr+s,tc,dr,dc,s);
 else
 {
  Board[tr+s][tc+s-1] = t;
  ChessBoard(tr+s,tc,tr+s-1,tc+s,s);
 }

 if(dr>=tr+s && dc>=tc+s)
  ChessBoard(tr+s,tc+s,dr,dc,s);
 else
 {
  Board[tr+s][tc+s] = t;
  ChessBoard(tr+s,tc,tr+s,tc+s,s);
 }
}

void main()
{
 cout<<endl<<"覆盖前,棋盘状态:"<<endl;
 for(int i = 0;i < 4;i++)
 {
  for(int j = 0;j < 4;j++)
   cout<<Board[i][j]<<" ";
  cout<<endl;
 }
 cout<<endl<<"覆盖后,棋盘状态:"<<endl;
 ChessBoard(0,0,2,3,4);
 for(i = 0;i < 4;i++)
 {
  for(int j = 0;j < 4;j++)
   cout<<Board[i][j]<<" ";
  cout<<endl;
 }
}

<3>运行结果截图：