c++象棋

#include <iostream>
#include <memory.h>
#include <cmath>
using namespace std;//存储结构：chess类是基类，派生类是各种棋子，在chessboard类中用chess的指针调用各个棋子
class chessboard;
class chess{
private:
int id;//等级
public:
chess(int i):id(i){}
int get(){return id;}
virtual bool judge_move(chessboard &cb,int startx,int starty,int aimx,int aimy)=0;
virtual ~chess(){};//虚析构
};
class chessboard{
private:
chess *c[10][9];
char chessword[15][4]={"帅","相","炮","士","車","馬","兵","","卒","马","车","仕","砲","象","将"};//名字
public:
chessboard(){memset(c, NULL, sizeof(c));};//把指针初始化为零指针
void init();
chess* get(int x,int y){return c[x][y];}
int getid(int x,int y){ if(c[x][y]!=NULL) return c[x][y]->get();return 0;}
void show();
void play();
bool move(int startx,int starty,int aimx,int aimy);
~chessboard();//析构函数
static bool end;//判断结束
static int player;
};
bool chessboard::end=true;
int chessboard::player=-1;
bool chessboard::move(int startx,int starty,int aimx,int aimy){
if(startx>=0&&startx<10&&starty>=0&&starty<9//初步判断传入的点是否符合规则
   &&aimx>=0&&aimx<10&&aimy>=0&&aimy<9
   &&getid(startx,starty)&&getid(startx,starty)*player>0
   &&c[startx][starty]->judge_move(*this,startx,starty,aimx,aimy)){
    if(c[aimx][aimy]!=NULL) delete c[aimx][aimy];//吃子
    c[aimx][aimy]=c[startx][starty];
    c[startx][starty]=NULL;
player*=-1;
return true;
}
cout<<"走法错误，不符合规则"<<endl;