Draft of exchange simulator

exchange.cpp

#include <iostream>
#include <mutex>
#include <functional>

class Price
{
    std::uint64_t value;
    std::ratio<1, 100> value;
};

class Volume
{
    std::uint64_t value;
    std::ratio<1, 100> value;
};

std::map<int, >

struct OrderBook
{
    void registerTransaction() noexcept
    {
        // price, buyer, seller, quantity, product
    }
};

struct PreOrderBook
{
    struct Order
    {
        Price price;
        Quantity quantity;
        enum direction;
        enum type;
    };

    std::map<Price, >;

    void onPriceUpdate(Price price)
    {
    }
};

struct Participant
{
    std::string name;
};

struct Instrument
{
};

int main()
{
    std::cout << "----------------" << std::endl;
}