编辑代码

#include<stdio.h>

#define N 8
char board[N+2][N+2];
int count = 0;

struct Pos
{
    int yos;   //行偏移量
    int xos;   //列偏移量
};

struct Pos pos[3] = { { -1, -1 }, { -1, 0 }, { -1, 1 } };


void Init(void)
{
    for (int row = 0; row < N + 2; row++)
    {
        for (int col = 0; col < N + 2; col++)
        {
            board[0][col] = '#';
            board[N + 1][col] = '#';
            board[row][0] = '#';
            board[row][N + 1] = '#';
        }
    }
    for (int i = 1; i <= N; i++)
    {
        for (int j = 1; j <= N; j++)
        {
            board[i][j] = ' ';
        }
    }
}

void Show(void)
{
    for (int i = 0; i < N + 2; i++)
    {
        for (int j = 0; j < N + 2; j++)
        {
            printf("%c", board[i][j]);
        }
        printf("\n");
    }
}

int Check(int row, int col)
{
    int ret = 1;
    int nr;
    int nc;
    for (int i = 0; i < 3 && ret; i++)
    {
        nr = row;
        nc = col;
        while (ret&&board[nr][nc] != '#')
        {
            if (board[nr][nc] == '*')
            {
                ret = 0;
                break;
            }
            nr = nr + pos[i].yos;
            nc = nc + pos[i].xos;
        }
    }
    return ret;
}

void Find(int row)
{
    if (row>N)
    {
        Show();
        count++;
        printf("%d\n",count);
    }
    else
    {
        for (int col = 1; col <= N; col++)
        {
            if (Check(row, col))
            {
                board[row][col] = '*';
                Find(row + 1);
                board[row][col] = ' ';
            }
        }
    }
}

int main()
{
    Init();
    Find(1);
    system("pause");

}