提交记录 1505 - Judge Duck Online

用户	题目	状态	得分	用时	内存	语言	代码长度
negiizhao	1003. 测测你的二分查找	Compile Error	0	0 ns	0 KB	C	220 B

提交时间	评测时间
2018-06-20 21:19:56	2020-07-31 20:51:19

代码

int binary_search(const unsigned *a, int n, unsigned x)
{
	const unsigned *b[2] = {a, a + n};
	do
	{
		const unsigned *mid(b[0] + (b[1] - b[0]) / 2);
		b[*mid > x] = mid;
	}
	while (b[0] + 1 != b[1]);
	return b[0] - a;
}

评测结果

Compilation

N/A

Compile Error

Score: N/A

显示更多

jp_data/tasks/8620fb46d32c11ea899e00163e04388b/contestant.c: In function ‘binary_search’:
jp_data/tasks/8620fb46d32c11ea899e00163e04388b/contestant.c:6:23: error: expected declaration specifiers or ‘...’ before ‘b’
    6 |   const unsigned *mid(b[0] + (b[1] - b[0]) / 2);
      |                       ^
jp_data/tasks/8620fb46d32c11ea899e00163e04388b/contestant.c:7:6: error: ‘mid’ undeclared (first use in this function)
    7 |   b[*mid > x] = mid;
      |      ^~~
jp_data/tasks/8620fb46d32c11ea899e00163e04388b/contestant.c:7:6: note: each undeclared identifier is reported only once for each function it appears in