#include<stdio.h>
#include<stdlib.h>

#define Maxsize 50
#define M = N = 8//定义迷宫的大小

typedef struct
{
    int i,j;
    int pre;
}Qu[Maxsize];//定义结构体
int front = -1,rear = -1;

int mg[M+2][N+2]=
{
    {1,1,1,1,1,1,1,1,1,1},
    {1,0,0,1,0,0,0,1,0,1},
    {1,0,0,1,0,0,0,1,0,1},
    {1,0,0,0,0,1,1,0,0,1},
    {1,0,1,1,1,0,0,0,0,1},
    {1,0,0,0,1,0,0,0,0,1},
    {1,0,1,0,0,0,1,0,0,1},
    {1,0,1,1,1,0,1,1,0,1},
    {1,1,0,0,0,0,0,0,0,1},
    {1,1,1,1,1,1,1,1,1,1}
};

int mgpath(int xi,int yi,int xe,int ye);
void print(int front);
  




int main()
{
    mgpath(1,1,M,N);
    system("pause");
    return 0;
}






int mgpath(int xi,int yi,int xe,int ye)//寻找路径
{
    int i,j;
    int find = 0;
    int di;//定义方位
    rear++;
    Qu[rear].i = xi;Qu[rear].j = yi;
    Qu[rear].pre = -1;
    mg[i][j] = -1;
    while(front<=rear && ! find)
    {
        front++;
        i = Qu[front].i;
        j = Qu[front].j;
        if(i == xe && j = ye)
        {
            find = 1;
            print(front);
            return(1);
        }
        for(di = 0; di<4; di++)
        {
            switch(di)//不同的方向顺时针
            {
            case 0:i = Qu[front].i-1; j = Qu[front].j;break;
            case 1:i = Qu[front].i; j = Qu[front].j+1;break;
            case 2:i = Qu[front].i+1;j = Qu[front].j;break;
            case 3:i = Qu[front].i;j = Qu[front].j-1;break;
            }
            if(mg[i][j] == 0)
            {
                rear++;
                Qu[rear].i = i;
                Qu[rear].j = j;
                Qu[rear],pre = front;
                mg[i][j] = -1;
            }
        }
    }
    return (0);
}


void print(int front)//迷宫的输出
{
    int k = front;
    int j, ns = 0;// 每5个一行
    printf("\n");
    do
    {
        j = k;
        k = Qu[k].pre;
        Qu[j].pre = -1;
    }while(k!=0);
    printf("迷宫的路径如下：\n");
    k = 0;
    while(k<Maxsize)
    {
        if(Qu[k].pre == -1)
        {
            ns++;
            printf("\t(%d,%d)", Qu[k].i,Qu[k].j);
            if(ns%5 == 0)
                printf("\n");
        }
        k++;
    }
    printf("\n");
}

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