提交记录 636 - Judge Duck Online

用户	题目	状态	得分	用时	内存	语言	代码长度
wxh	1003. 测测你的二分查找	Compile Error	0	0 ns	0 KB	C	255 B

提交时间	评测时间
2018-06-20 15:04:24	2020-07-31 20:41:06

代码

int binary_search(const register unsigned *a, register int n, register unsigned x)
{
register unsigned *l=a,*r=a+n,mid;
while(l+1!=r){
mid=(*(unsigned*)&l+*(unsigned*)&r)>>1;
*(unsigned**)&mid<=x?l=*(unsigned**)&mid:(r=*(unsigned**)&mid);
};
return l-a;
}

评测结果

Compilation

N/A

Compile Error

Score: N/A

显示更多

jp_data/tasks/18dbeaf6d32b11ea899e00163e04388b/contestant.c: In function ‘binary_search’:
jp_data/tasks/18dbeaf6d32b11ea899e00163e04388b/contestant.c:3:22: warning: initialization discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
    3 | register unsigned *l=a,*r=a+n,mid;
      |                      ^
jp_data/tasks/18dbeaf6d32b11ea899e00163e04388b/contestant.c:3:27: warning: initialization discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
    3 | register unsigned *l=a,*r=a+n,mid;
      |                           ^
jp_data/tasks/18dbeaf6d32b11ea899e00163e04388b/contestant.c:5:1: error: address of register variable ‘l’ requested
    5 | mid=(*(unsigned*)&l+*(unsigned*)&r)>>1;
      | ^~~
jp_data/tasks/18dbeaf6d32b11ea899e00163e04388b/contestant.c:5:1: error: address of register variable ‘r’ requested
jp_data/tasks/18dbeaf6d32b11ea899e00163e04388b/contestant.c:6:1: error: address of register variable ‘mid’ requested
    6 | *(unsigned**)&mid<=x?l=*(unsigned**)&mid:(r=*(unsigned**)&mid);
      | ^
jp_data/tasks/18dbeaf6d32b11ea899e00163e04388b/contestant.c:6:1: error: address of register variable ‘mid’ requested
jp_data/tasks/18dbeaf6d32b11ea899e00163e04388b/contestant.c:6:1: error: address of register variable ‘mid’ requested