UVa 227 Puzzle AC

#include "stdio.h"
#include "string.h"
#include "stdlib.h"
#include "ctype.h"
#define maxn 85
#define swap(a,b) a^=b^=a^=b//交换ab
int main()
{
	int T,n;	
	int count=0;
	char s[5][5];
	char c;
	int x,y;
	char sequence[maxn];
	int OFF=0;
	int i;
	int time;
	memset(s,0,sizeof(s));
	while (gets(s[0]))
	{
		OFF=0;
		if (s[0][0]=='Z') break;
		gets(s[1]);
		gets(s[2]);
		gets(s[3]);
		gets(s[4]);
		for (i=0;i<5;i++)
		{
			for (int j=0;j<5;j++)
			{
				if(s[i][j]==' ') 
				{x=i;y=j;}		
			}
		}
		i=0;
		while ((c=getchar())!='0')//直到输入结束
		{
			if (isalpha(c)!=0)
			{
				sequence[i]=c;
				i++;
			}
			
		}
		getchar();//拿走\n
		n=i;
		for (i=0;i=0) {swap(s[x][y],s[x-1][y]);x--;}
					 else OFF=1;
				break;
			case 'B':if(x+1<=4) {swap(s[x][y],s[x+1][y]);x++;}
					 else OFF=1;
				break;
			case 'L':if(y-1>=0) {swap(s[x][y],s[x][y-1]);y--;}
					 else OFF=1;
				break;
			case 'R':if(y+1<=4) {swap(s[x][y],s[x][y+1]);y++;}
					 else OFF=1;
				break;
			case '0':
				break;
			}
		}
		if (count>0) putchar('\n');
		printf("Puzzle #%d:\n",++count);
		for (int i=0;i<5;i++)
		{
			if (OFF==1)
			{
				printf("This puzzle has no final configuration.\n");
				break;
			}
				printf("%c %c %c %c %c\n",s[i][0],s[i][1],s[i][2],s[i][3],s[i][4]);
		}
		
		
	}
	system("pause");
	return 0;
}