About Broker In The Stock Market I Want To Know What Function I Can Put In The Class Despite Sell Or Buy And How I Do These Class ?

#include <iostream>
using namespace std;
 
class broker{
private:
	int id;
	string name;
	int brockageid;
	broker();
public:
	void sell(client exchanges);
	void buy(client exchanges);
};

#include"broker.h"
#include <iostream>
using namespace std;

broker::broker(){
	id = 201156;
	name = "-";
	brockageid = 211105;
	cout << "broker name is";
}

void broker ::sell(client exchanges){
	cout << "exchanges sold ";
}

void broker::buy(client exchanges){
	cout << "exchanges bought";
}