#include <string>
#include <sstream>
#include <cmath>
#include "item.h"

using namespace std;

item::item(const string & item_name, double item_price) {
    name = item_name;
    price = item_price;
}

const string & item::get_name() const {
    return name;
}

double item::get_price() const {
    return price;
}

string item::to_string() const {
    ostringstream out;
    out << name << " ($" << price << ")";
    return out.str();
}

void item::discount(double percent) {
    price *= (1 - percent / 100.0);
    price = round(price * 100) / 100.0;
}

ostream & operator<<(ostream & out, const item & i) {
    out << i.to_string();
    return out;
}

bool operator<(const item & lhs, const item & rhs) {
    return lhs.get_price() < rhs.get_price();
}