uva - 340 - Master-Mind Hints

//#define Local
#include <iostream>
#include <cstring>
#include <stdio.h> 
using namespace std;

#define MAX 2000+10

struct Array
{
	int num[MAX];
	int len;
};

void change (Array *a, char s[])
{
	int i = 0, j = 0;
	for (i = 0; i < strlen(s); i++)
	{
		if (s[i] >= '0' && s[i] <= '9')//有错误过，没写等号
			(*a).num[j++] = s[i] - '0';
	}
	(*a).len = j;
}

int Judge_break(Array a)
{
	int i = 0;
	for (i = 0; i < a.len; i++)
		if (a.num[i] != 0)
			return 1;
	return 0;
}

int Count_A (Array guess, Array password)
{
	int i = 0, count = 0;
	for (i = 0; i < password.len; i++)
	{
		if (guess.num[i] == password.num[i])
		{
			count++;
		}
	}
	return count;
}

int Count_B (Array guess, Array password)
{
	int i = 0, j = 0, count = 0, flag1[MAX], flag2[MAX];//flag标志
	memset(flag1, 1, sizeof(flag1));
	memset(flag2, 1, sizeof(flag2));
	for (i = 0; i < password.len; i++)
	{
		if (guess.num[i] == password.num[i])
		{
			flag1[i] = 0;
			flag2[i] = 0;
		}
	}
	for (i = 0; i < guess.len; i++)
	{
		for (j = 0; j < password.len; j++)
		{
			if (guess.num[i] == password.num[j] && flag1[j] != 0 && flag2[i] != 0)
			{
				count++;
				flag1[j] = 0;
				break;
			}
		}
	}
	return count;
}

int main()
{
#ifdef Local
	freopen("a.in", "r", stdin);
	freopen("a.out", "w", stdout);
#endif
	int n = 0, A = 0, B = 0, count = 0;
	char s[MAX];
	Array password = {0, 0}, guess = {0, 0};
	while (cin >> n && n != 0)
	{
		cout << "Game " << ++count << ":" <<endl;
		getchar();
		gets(s);
		change(&password, s);//把密码存起来。
		while(true)
		{
			gets(s);
			change(&guess, s);//把猜测存起来。
			if (Judge_break(guess) == 0)	//都是0， 跳出循环。
				break;
			A = Count_A(guess, password);
			B = Count_B(guess, password);
			cout << "    (" << A << "," << B << ")" << endl;
		}
	}
}
/*致命错误：
1、题目要求的大小是1000，但是用字符串输入包含了空格所以应该设置为1999以上。
2、freopen不能用fflush。
3、设置标识还错误的原因是例如 答案和猜测的第三个都是5，但是标志可能提前改掉这个的标志。
4、设置两个标志域，感觉比较麻烦，应该有更简单的方法，待优化。
*/