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本人写的迷宫,不过知道这样才能输出所有的路径

 2008-03-08 12:29:39 来源:WEB开发网   
核心提示:本人写的迷宫,不过知道这样才能输出所有的路径,望各高手刺教#include<stdio.h>#include<conio.h>#define M 5#define N 5strUCt queue{ int x; int y; int PRe;}sq[200];int maze[M+2][N+2]
本人写的迷宫,不过知道这样才能输出所有的路径,望各高手刺教 #include<stdio.h>
#include<conio.h>
#define M 5
#define N 5
strUCt queue
{
 int x;
 int y;
 int PRe;
}sq[200];
int maze[M+2][N+2];
typedef struct          
{ int dx;
  int dy;
}moved;
moved move[8];
typedef struct
{
 int x;
 int y;
}ROAD;
ROAD road[M*N];
void inimove(moved move[])    /*initialize move[]*/
{
  move[0].dx=0;move[0].dy=-1;
  move[1].dx=1;move[1].dy=-1;
  move[2].dx=1;move[2].dy=0;
  move[3].dx=1;move[3].dy=1;
  move[4].dx=0;move[4].dy=1;
  move[5].dx=-1;move[5].dy=1;
  move[6].dx=-1;move[6].dy=0;
  move[7].dx=-1;move[7].dy=-1;
}
void input(int maze[M+2][N+2])
{
 int i,j;char ch;
 for(i=0;i<=M;i++)               /*set the wall outside the maze*/ 
  {
  maze[i][0]=1;
  maze[i][N+1]=1;
  }
 for(j=0;j<=N+1;j++)              /*set the wall outside the maze*/
  {
  maze[0][j]=maze[M+1][j]=1;
  }
 for(i=1;i<=M;i++)               /*input the data of maze*/
   for(j=1;j<=N;j++)
    {
    ch=getch();
    maze[i][j]=(int)(ch-48);
    printf("%3d",ch-48);
    printf(" ");
    if(!(j%N))
     printf(" ");
    }
} void output(int rear)    /*output the path*/
{
 int i,j,k;
 for(j=0,k=rear;(k!=0)&&(j<M*N);j++)
  {
  road[j].x=sq[k].x;
  road[j].y=sq[k].y;
  k=sq[k].pre;
  }
 
 for(i=1;i<=M;i++)
  for(j=1;j<=N;j++)
   {
   if(maze[i][j]==-1)
   {
    for(k=0;k<M*N;k++)
     {
      if((i==road[k].x)&&(j==road[k].y))
      maze[i][j]=8;    /*use '8'to mark the path*/
     }
    if(maze[i][j]==-1)
     maze[i][j]=0;     
   }
   printf("%3d",maze[i][j]);
   printf(" ");
   if(j%N==0) 
     printf(" ");
   } 
}
void path()       /* seek the path*/
{
 int i,j,x,y,v,front,rear,find;
 sq[1].x=1;sq[1].y=1;sq[1].pre=0;
 find=0;
 front=1;rear=1;maze[1][1]=-1;
 while(front<=rear&&!find)
 {
  x=sq[front].x;
  y=sq[front].y;
  for(v=0;v<=7;v++)
  {
   i=x+move[v].dx;
   j=y+move[v].dy;
   if(!maze[i][j])
   {
    rear++;
    sq[rear].x=i;
    sq[rear].y=j;
    sq[rear].pre=front;
    maze[i][j]=-1;
   }
   if(i==M&&j==N)
   {
    printf("One of the pathes is:(the path is marked by 8) ");
    output(rear);
    find=1;
   } 
 
  }
  front++;
  }
 if(!find)
 printf("There is no path! ");
} int check(int maze[M+2][N+2])    /*check whether the data inputed is right*/
{
 int i,j,m,n;  
 for(i=1;i<=M;i++)
  for(j=1;j<=N;j++)
   {
   if((maze[i][j]!=1)&&(maze[i][j]!=0))
    {
     return(0);
    }
   }
  return(1);
}
main()
{
 int i,j;char ch;
 printf("The size of the maze is %d*%d. ",M,N);
 printf("Input your maze[][](the number you input must be 1 or 0): ");/*input the data of the maze*/
 input(maze);
 printf("input completely. ");
 while(maze[1][1]==1maze[M][N]==1check(maze)==0)   /*check whether the data inputed is right .*/
  {                           /*If the data is wrong,please input again.*/
   printf("Warning:maze[][] you input is wrong! ");
   printf("Maze[1][1] and maze[M][N] must both equal 0. ");
   printf("Every item of maze[][]must be 1 or 0. ");
   printf("Input your maze[][] again: ");
   input(maze);
   printf("input completely. "); 
  }
 printf("Press any key to display the path. ");
 getch();
 inimove(move);
 path();
 printf("press ENTER to end the program: ");
 scanf("%c",&ch);
}
 

Tags:本人 迷宫 不过

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