C++求教 。error C3867: “Stock::print”: 非标准语法；请使用 "&" 来创建指向成员的指针

[Chen_XH0701]

#include<iostream>
#include<string>
using namespace std;
class Stock
{
public:
	Stock(const char na[20],int q=1000,double p=8.98);

	void print();


private:			
	char stockcode[20];
	int quan;
	double price;
};

Stock::Stock(const char na[20],int q,double p)
{
	stockcode[20] = na[20];
	quan = q;
	price = p;
}
void Stock::print()
{
	cout << this->stockcode[20] << this->quan << this->print << endl;
}



int main()
{
	Stock S1("600001", 3000, 5.67);
	S1.print();
	Stock S2("600002");
	S2.print();
    return 0;
}

[Isnis-fallen]

#include<iostream>
#include<string>
using namespace std;
class Stock
{
public:
    Stock(const char na[20],int q=1000,double p=8.98);
 
    void print();
 
 
private:            
    char stockcode[20];
    int quan;
    double price;
};
 
Stock::Stock(const char na[20],int q,double p)
{
    strcpy(stockcode, na);
    quan = q;
    price = p;
}
void Stock::print()
{
    cout << this->stockcode << this->quan << this->price << endl;
}
 
int main(int argc, char* argv[])
{
    Stock S1("600001", 3000, 5.67);
    S1.print();
    Stock S2("600002");
    S2.print();
    return 0;
}