VC2010中编译错误
# ifndef STOCK10_H_
# define STOCK01_H_
# include <string>
class Stock
{
private:
std::string company;
long shares;
double share_val;
double total_val;
void set_tot(){ total_val = share_val; }
public:
Stock();
Stock(const std::string & co, long n = 0, double pr = 0.0);
~Stock();
void buy( long num, double price);
void sell(long num, double price);
void update(double price);
void show();
};
//fatal error LNK1120: 1 个无法解析的外部命令