提交记录 12494 - Judge Duck Online

用户	题目	状态	得分	用时	内存	语言	代码长度
tiger0132	1000. 测测你的 A+B	Compile Error	0	0 ns	0 KB	C	153 B

提交时间	评测时间
2020-04-14 17:27:48	2020-08-01 02:55:40

代码

unsigned int plus(register const unsigned int a,register const unsigned int b)
{
	__asm__ __volatile__ (
		"add %1, %0;"
		:"r"(a),"=r"(b));
	return b;
}

评测结果

Compilation

N/A

Compile Error

Score: N/A

显示更多

jp_data/tasks/6b3c1a95d35f11ea899e00163e04388b/contestant.c: In function ‘plus’:
jp_data/tasks/6b3c1a95d35f11ea899e00163e04388b/contestant.c:3:2: error: read-only parameter ‘a’ use as ‘asm’ output
    3 |  __asm__ __volatile__ (
      |  ^~~~~~~
jp_data/tasks/6b3c1a95d35f11ea899e00163e04388b/contestant.c:5:3: error: output operand constraint lacks ‘=’
    5 |   :"r"(a),"=r"(b));
      |   ^
jp_data/tasks/6b3c1a95d35f11ea899e00163e04388b/contestant.c:3:2: error: read-only parameter ‘b’ use as ‘asm’ output
    3 |  __asm__ __volatile__ (
      |  ^~~~~~~
jp_data/tasks/6b3c1a95d35f11ea899e00163e04388b/contestant.c:3:2: error: output operand constraint lacks ‘=’
jp_data/tasks/6b3c1a95d35f11ea899e00163e04388b/contestant.c:3:2: error: invalid lvalue in asm output 0