A program to randomly split the money among 2 groups

#include <iostream>
#include <cstdlib>
#include <ctime>
#include <iomanip>
using namespace std;

void split (float money, int &group_one, int &group_two)
{
	srand(time(NULL));
	float left_money = money;
	while (left_money > 0)
	{
		if (rand()%2 == 1)
		{
			group_one++;
			left_money -= 0.5;
		}
		else 
		{
			group_two++;
			left_money -= 0.5;
		}	
	}
}

int main()
{
	int group_one = 0;
	int group_two = 0;
	float money = 100;
	split(money, group_one, group_two);
	cout << "Group_one has: " << setprecision(2) << fixed << group_one*0.5 << endl;