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; }