#include <stdio.h>

char getChar(int v)
{
	if (v < 10)
		return (char)('0' + v);
	else
		return (char)('A' + v - 10);
}
int getValue(char c)
{
	if (c >= '0' && c <= '9')
		return c - '0';
	else if (c >= 'A' && c <= 'Z') 
		return c - 'A' + 10;
	else
		return c - 'a' + 10;
}

char str[100];	
int A[4];
int B[8];

int main()
{
	while (scanf("%d,%d,%d,%d", &A[0], &A[1], &A[2], &A[3]) != -1)
	{
		int i, j, r, exp;
		B[0] = A[0];
		B[1] = A[1];
		B[2] = A[2] >> 8;
		B[3] = A[2] & 255;
		B[4] = A[3] >> 8;
		B[5] = A[3] & 255;
		r = 0xffff;
		for (i = 0; i < 6; i++)
		{
			r ^= B[i];
			for (j = 0; j < 8; j++)
				if (r&1)
					r = (r >> 1) ^ 0xa001;
				else
					r >>= 1;
		}
		r = (r >> 8) + ((r & 255) << 8);
		B[6] = r >> 8;
		B[7] = r & 255;
		for (i = 0; i < 8; i++)
			printf("%c%c", getChar(B[i] >> 4), getChar(B[i] & 15));
		printf("\n");
		scanf("%s",str);
		r = 0xffff;
		for (i = 0; str[i + 4]; i += 2)
		{
			int value = (getValue(str[i]) << 4) + getValue(str[i + 1]);
			r ^= value;
			for (j = 0; j < 8; j++)
				if (r & 1)
					r = (r >> 1) ^ 0xa001;
				else
					r >>= 1;
		}
		r = (r >> 8) + ((r & 255) << 8);
		exp = ((getValue(str[i]) * 16 + getValue(str[i + 1])) * 16 + getValue(str[i + 2])) * 16 + getValue(str[i + 3]);
		if (r != exp)
		{
			printf("CRC_ERROR\n");
		}
		else
		{
			for (i = 6; str[i + 4]; i += 8)
			{
				int k;
				unsigned int value = 0;
				unsigned int *p;
				float *q;
				for (k = 0; k < 8; k++)
					value = (value << 4) + (unsigned int)(getValue(str[i + k]));
				p = &value;
				q = (float*)p;
				if (i > 6)
					printf(",");
				printf("%.1lf", (*q));
			}
			printf("\n");
		}
	}
	return 0;
}

• Re:比赛结束了，帖个程序吧，请指点 (1983) 0912090002 2010-01-16 13:16:52
• Re:比赛结束了，帖个程序吧，请指点 (41) 0912050001 2010-01-16 15:51:56
  • Re:比赛结束了，帖个程序吧，请指点 (59) 0911300028 2010-01-16 17:02:15
    • Re:比赛结束了，帖个程序吧，请指点 (21) kf 2010-01-17 00:59:23