所以5000以上包括5000？

#include<iostream>
using namespace std;

void print(float discount, float pay)
{
	cout << "discount=" << discount << ",pay=" << pay << endl;
}

int main()
{
	float n, discount;
	while (cin >> n)
	{
		if (n < 1000)
		{
			discount = 1;
		}
		else if (n < 2000)
		{
			discount = 0.95;
		}
		else if (n < 3000)
		{
			discount = 0.9;
		}
		else if (n < 5000)
		{
			discount = 0.85;
		}
		else
		{
			discount = 0.8;
		}
		print(discount, discount * n);
	}
	return 0;
}