POJ1003-Hangover

#include<iostream>using namespace std;int main(){double c;while (cin >> c) {if (c < 1e-5) return 0;float num = 1.0;double length = 0.0 + 1 / (num + 1.0);while (length - c < 0) {num += 1.0;length += 1 / (num + 1.0);}cout << int(num) << " card(s)" << endl;}return 0;}