微信分红包

写的一般，欢迎提出更好的思路

void  RandMoney(float money, int person)
{
	float dif = money - 0.01*person;
	if (dif < 0 && abs(dif)>1e-6)
		cout << "每个红包金额不能低于0.01元" << endl;
	else if (abs(dif) <= 1e-6)//刚好每个人0.01元
	{
		float* res = (float*)malloc(person*sizeof(float));
		
		for (int i = 0; i < person; i++)
		{
			res[i] = 0.01;
			cout << res[i] << endl;
		}
			
	}
	else
	{
		srand((unsigned)time(NULL));
		vector<int> vec_rand;
		vector<float> vec_res;
		int sum = 0;
		for (int i = 0; i < person; i++)
		{
			vec_rand.push_back(rand() % 50 + 1);
			sum += vec_rand[i];
		}
		float one = money / sum;
		float fsum = 0;
		for (int i = 0; i < person; i++)
		{
			float x = one*vec_rand[i];
			char s[6] = { 0 };
			sprintf(s, "%.2f", x);
			vec_res.push_back(atof(s));
			fsum += vec_res[i];
		}
		if (abs(money - fsum)>1e-6)
			vec_res[person - 1] += abs(money - fsum);
		for (int i = 0; i < person; i++)
			cout << vec_res[i] << endl;
	}
	
}