[Error] passing 'const Stock' as 'this' argument of 'void Stock::show()' discards qualifiers [-fpermissive]
#include <iostream>
#include <string>
using namespace std;
class Stock{
private:
string name;
int in_hand;
double price;
double total;
void sum() {total = in_hand * price;};
public:
Stock(const string &name_, int in_hand_ = 0, double price_ = 0);
void buy_share(int add_number);
void sold_out(int lower_number);
void float_move(double change);
void show();
const Stock &decision(const Stock &s)const {
return total > s.total? *this : s;
}
};
int main(){
const Stock company[4]={
Stock("中国石油",10,20),
Stock("中国基金",20,67.8),
Stock("上海银行",30,45.6),
Stock("中外合作",20,67.8),
};
const Stock *pointer = &company[0];
for(auto i = 1; i < 4 ;i++){
pointer = &pointer->decision(company[i]);
}
/*int a = 0, b = 0;
double c = 0;*/
/*winner.buy_share(a);
winner.sold_out(b);
winner.float_move(c);*/
pointer->show();
return 0;
}
for循环感觉自己应该是让一个指针指向一个对象的地址,可是不知怎么的就是错。