缘由c++编程怎么写，紧急求解-编程语言-CSDN问答

void 三七二十一数()
{//缘由https://ask.csdn.net/questions/7566632?spm=1005.2025.3001.5141
	int n = 0, a = 0, b = 0, p = 1;
	std::cin >> n;
	while (n--)
	{
		std::cin >> a >> b;
		while (a<=b)
		{
			if (a % 3 == 2 && a % 7 == 1)
				std::cout << a << "\t", p = 0; else;
			++a;
		}
	}
	if (p)std::cout << "none";
}