C++ 模拟炒股软件代码示例

以下是一个简单的模拟炒股软件的代码示例：

#include <iostream>
#include <string>
#include <vector>

using namespace std;

// 股票类
class Stock {
public:
    Stock(string n, double p) : name(n), price(p) {}
    string getName() { return name; }
    double getPrice() { return price; }
    void setPrice(double p) { price = p; }
private:
    string name;
    double price;
};

// 用户类
class User {
public:
    User(string n, double m) : name(n), money(m) {}
    string getName() { return name; }
    double getMoney() { return money; }
    void setMoney(double m) { money = m; }
    void buy(Stock& s, int count);
    void sell(Stock& s, int count);
private:
    string name;
    double money;
    vector<pair<Stock, int>> stocks; // 股票和持有数量
};

void User::buy(Stock& s, int count) {
    double total_cost = s.getPrice() * count;
    if (total_cost > money) {
        cout << 'Not enough money.' << endl;
        return;
    }
    for (auto& p : stocks) {
        if (p.first.getName() == s.getName()) {
            p.second += count;
            money -= total_cost;
            cout << 'Buy ' << count << ' ' << s.getName() << ' stocks successfully.' << endl;
            return;
        }
    }
    stocks.push_back(make_pair(s, count));
    money -= total_cost;
    cout << 'Buy ' << count << ' ' << s.getName() << ' stocks successfully.' << endl;
}

void User::sell(Stock& s, int count) {
    double total_income = s.getPrice() * count;
    for (auto it = stocks.begin(); it != stocks.end(); it++) {
        if (it->first.getName() == s.getName()) {
            if (it->second < count) {
                cout << 'Not enough stocks to sell.' << endl;
                return;
            }
            it->second -= count;
            money += total_income;
            cout << 'Sell ' << count << ' ' << s.getName() << ' stocks successfully.' << endl;
            if (it->second == 0) {
                stocks.erase(it);
            }
            return;
        }
    }
    cout << 'You don't have any ' << s.getName() << ' stocks.' << endl;
}

// 股票市场类
class Market {
public:
    Market() {
        stocks.push_back(Stock('Apple', 150.0));
        stocks.push_back(Stock('Google', 200.0));
        stocks.push_back(Stock('Microsoft', 120.0));
    }
    void showStocks() {
        cout << 'Stocks in the market:' << endl;
        for (auto& s : stocks) {
            cout << s.getName() << ' ' << s.getPrice() << endl;
        }
    }
    Stock& getStock(string name) {
        for (auto& s : stocks) {
            if (s.getName() == name) {
                return s;
            }
        }
        throw 'Stock not found.';
    }
private:
    vector<Stock> stocks;
};

int main() {
    Market market;
    User user('Alice', 1000.0);

    market.showStocks();
    user.buy(market.getStock('Apple'), 10);
    user.buy(market.getStock('Google'), 5);
    user.sell(market.getStock('Microsoft'), 3);
    user.sell(market.getStock('Apple'), 5);
    user.buy(market.getStock('Microsoft'), 8);

    cout << 'User ' << user.getName() << ' has ' << user.getMoney() << ' dollars.' << endl;
    cout << 'User ' << user.getName() << ' has the following stocks:' << endl;
    for (auto& p : user.stocks) {
        cout << p.first.getName() << ' ' << p.second << endl;
    }

    return 0;
}

该模拟炒股软件包含股票类、用户类和股票市场类。用户可以通过购买和卖出股票来进行投资，股票市场包含了一些股票，用户可以在其中进行选择。在这个示例中，用户可以购买股票、卖出股票，并且可以查看自己的账户余额和持有的股票。