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image-20241106174640708

我就猜到,跳跃着看会有听不懂的地方,我先把已经敲过的代码放到这里,防止自己之后找不到

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#ifndef __STOCK00__H__
#define __STOCK00__H__
#include <string>
class Stock
{
private:
    std::string company;
    long shares;
    double share_val;
    double total_val;
    void set_tot() { total_val = shares * share_val; }

public:
    void acquire(const std::string &co, long n, double pr);
    void buy(long num, double price);

    void sell(long num, double price);
    void update(double price);
    void show();
};
#endif

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