提交记录 872 - Judge Duck Online

用户	题目	状态	得分	用时	内存	语言	代码长度
OoXoxoXoO	1003. 测测你的二分查找	Compile Error	0	0 ns	0 KB	C	294 B

提交时间	评测时间
2018-06-20 17:25:18	2020-07-31 20:43:51

代码

int binary_search(const unsigned *a, int n, unsigned value)
{
    while (n > 0) {
        const unsigned * it = first; 
        step = n / 2; 
        it += step;
        if (*it < value) {
            a = ++it; 
            n -= step + 1; 
        }
        else
            n = step;
    }
}

评测结果

Compilation

N/A

Compile Error

Score: N/A

显示更多

jp_data/tasks/7b34d0dbd32b11ea899e00163e04388b/contestant.c: In function ‘binary_search’:
jp_data/tasks/7b34d0dbd32b11ea899e00163e04388b/contestant.c:4:31: error: ‘first’ undeclared (first use in this function)
    4 |         const unsigned * it = first;
      |                               ^~~~~
jp_data/tasks/7b34d0dbd32b11ea899e00163e04388b/contestant.c:4:31: note: each undeclared identifier is reported only once for each function it appears in
jp_data/tasks/7b34d0dbd32b11ea899e00163e04388b/contestant.c:5:9: error: ‘step’ undeclared (first use in this function)
    5 |         step = n / 2;
      |         ^~~~