寒假的ACM训练三（PC110107/UVa10196）

#include <iostream>
#include <string.h>

using namespace std;
char qp[10][10];
int result;     //结果
int black_k_x;  //将军的x,y
int black_k_y;
int white_k_x;
int white_k_y;
int abs(int i){
   if(i<0)
      return -i;
      return i;
}
//马
bool n_check(int n_x,int n_y,int k_x,int k_y){

    if(abs(n_x-k_x)==2&&abs(n_y-k_y)==1)
       return true;
    if(abs(n_x-k_x)==1&&abs(n_y-k_y)==2)
       return  true;

       return false;

}
//兵
bool p_check(int p_x,int p_y,int k_x,int k_y){
    if(qp[p_x][p_y]=='p'){
        if(p_x+1==k_x&&abs(p_y-k_y)==1)
         return true;
    }
    else if(qp[p_x][p_y]=='P'){
        if(p_x-1==k_x&&abs(p_y-k_y)==1)
         return true;
    }
    return false;

}
//车
bool r_check(int r_x,int r_y,int k_x,int k_y){
    int  i;
     if(r_x==k_x){  //同横
         if(k_y>r_y){  //r_y 比较小
             for(i=r_y+1;i<k_y;i++)
                if(qp[r_x][i]!='.')
                break;
              if(i==k_y)
                return true;
         }
         if(k_y<r_y){

             for(i=k_y+1;i<r_y;i++)
                if(qp[r_x][i]!='.')
                break;

              if(i==r_y)
                return true;

         }

     }
     if(r_y==k_y){  //同列
         if(k_x>r_x){  //r_x比较小
             for(i=r_x+1;i<k_x;i++)
                if(qp[i][k_y]!='.')
                break;
              if(i==k_x)
                return true;
         }
         if(k_x<r_x){  //k_x 比较小

             for(i=k_x+1;i<r_x;i++)
                if(qp[i][k_y]!='.')
                break;

              if(i==r_x)
                return true;
         }

     }
     return false;

}
//象
bool b_check(int b_x,int b_y,int k_x,int k_y){
    int i,j;
    //x差和y差相同
    if(abs(b_x-k_x)==abs(b_y-k_y)){

        //xy同增
        i=b_x;j=b_y;
        while(i<k_x&&j<k_y){
            i++;j++;
            if(qp[i][j]!='.')
              break;
        }

        //x减y增
         while(i>k_x&&j<k_y){

         i--;j++;
            if(qp[i][j]!='.')
              break;
         }

        //x增y减
         while(i<k_x&&j>k_y){

         i++;j--;
            if(qp[i][j]!='.')
              break;
         }

        //x减y减
         while(i>k_x&&j>k_y){
         i--;j--;
            if(qp[i][j]!='.')
              break;
         }

        if(i==k_x&&j==k_y)
             return true;

    }
    return false;

}
//后
bool q_check(int q_x,int q_y,int k_x,int k_y){
    return r_check(q_x,q_y,k_x,k_y)||b_check(q_x,q_y,k_x,k_y);

}
void check(){

     bool f;
    for(int i=1;i<=8;i++)
    for(int j=1;j<=8;j++){

      if(qp[i][j]=='p'){
          f=(p_check(i,j,white_k_x,white_k_y));

     }else if(qp[i][j]=='n'){
         f=(n_check(i,j,white_k_x,white_k_y));

     } else if(qp[i][j]=='q'){
          f=(q_check(i,j,white_k_x,white_k_y));

     }else if(qp[i][j]=='r'){
          f=(r_check(i,j,white_k_x,white_k_y));

     }else if(qp[i][j]=='b'){
          f=(b_check(i,j,white_k_x,white_k_y));

     }

     if(f==true){

        result=1;
        return;
            }

    if(qp[i][j]=='P'){
        f=(p_check(i,j,black_k_x,black_k_y));

     }else if(qp[i][j]=='N'){
         f=(n_check(i,j,black_k_x,black_k_y));

     }else if(qp[i][j]=='Q'){
        f=(q_check(i,j,black_k_x,black_k_y));

     }else if(qp[i][j]=='R'){
         f=(r_check(i,j,black_k_x,black_k_y));

     }else if(qp[i][j]=='B'){
         f=(b_check(i,j,black_k_x,black_k_y));
     }
     if(f==true){

        result=0;
        return;
            }

    }
    result=2;

}

int main()
{
    int run=1;

    while(true){
    bool flag=true; //退出标志

    memset(qp,'.',sizeof(qp));
    for(int i=1;i<=8;i++)
      for(int j=1;j<=8;j++){
        cin>>qp[i][j];
        if(flag&&qp[i][j]!='.')
           flag=false;
        if(qp[i][j]=='k'){black_k_x=i;black_k_y=j;}
        if(qp[i][j]=='K'){white_k_x=i;white_k_y=j;}

      }
      if(flag) break; //空盘退出

       check();              //读盘

    if(result==0) //结果为0
    cout << "Game #"<<run<<": black king is in check." << endl;
    else if(result==1)
    cout << "Game #"<<run<<": white king is in check." <<endl;
    else
    cout << "Game #"<<run<<": no king is in check."<<endl;

    run++;

              }
    return 0;
}