4.27
#include<bits/stdc++.h>
#include<string>
using namespace std;
class Stock
{
private:
string stockcode;
int quan;
double price;
public:
Stock(string na,int q=1000,double p=8.98)
{stockcode=na;
quan=q;
price=p;
}
void print()
{
cout<<"stockcode="<<this->stockcode<<" quan="<<this->quan<<" price="<<this->price<<endl;
}

};
int main(){
Stock a("123456"),b("5436",1234,1.1);
a.print();
b.print();
return 0;

}