代码

int binary_search(const unsigned *a, int n, unsigned x)
{
__asm__
	(
		"mov %0,%%eax\n"
		"begin:\n"
		"dec %%eax\n"
		"jz end\n"
		"jmp begin\n"
		"end:\n"
		:
		:"g"(n)
		:
	);
	for(int i = 0; i < n; i++)
		if(a[i] == x)
			return i;
	return 233;
}

评测结果