代码比较烂。。求教了。。谢谢。。
#include <iostream>
#include <vector>
using namespace std;

char map[50][50];
bool flag[50][50];

int main()
{
	int x , y , k;
	int step=0 , loop = 0;
	
	cin >> x>> y>>k;

	while (x != 0)
	{
		memset( flag,false,sizeof(flag) );

		for (int x1 =0 ; x1 < x ; x1++)
		{
			for (int y1 = 0; y1 < y ; y1++)
			{
				cin >> map[x1][y1];
			}
		}

		int x2 = 0 , y2 = k-1;

		while ( ( !( x2<0 || y2<0 || x2>x || y2>y ) )  && flag[x2][y2] == false)
		{
			flag[x2][y2] = true;
			switch( map[x2][y2] )
			{
			case 'E':
				{
					y2++;
					break;
				}
			case 'W':
				{
					y2--;
					break;
				}
			case 'S':
				{
					x2++;
					break;
				}
			case 'N':
				{
					x2--;
					break;
				}
			default :
				break;
			}
			step++;					
		}

		if ( x2<0 || y2<0 || x2>x || y2>y)
			memset( flag,false,sizeof(flag) );

		if ( flag[x2][y2] == true )
		{
			memset( flag,false,sizeof(flag) );
			while (flag[x2][y2] == false)
			{
				flag[x2][y2] = true;
				switch( map[x2][y2] )
				{
				case 'E':
					y2++;
					break;
				case 'W':
					y2--;
					break;
				case 'S':
					x2++;
					break;
				case 'N':
					x2--;
					break;
				default :
					break;
				}
				loop++;	
			}
		}

		if ( loop == 0 )
			cout <<step<<" step(s) to exit"<<endl;
		else
			cout <<step-loop<<" step(s) before a loop of "<<loop<<" step(s)"<<endl;

		step = 0;
		loop = 0;

		cin >> x>> y>>k;
	}

	return 0;
}

• Re:谁能告诉我为什么WA。。郁闷死了。。提供组数据也行啊。。 (1681) 2008161035 2010-03-26 23:56:14