두 클래스를 이용해서 벡터 채워 넣는 방법..

#include <iostream>
#include <vector>
using namespace std;
 
class order;
 
class IceCreamSundae
{
private:
	int flavor;
	int size;
	int toping;
public:
	void getInformation(int a, int b, int c)
	{
		flavor = a;
		size = b;
		toping = c;
	}
 
};
 
class order
{
private:
	vector<IceCreamSundae> customer;
 
public:
	void FillVector(int a, int b, int c)
	{
		customer.push_back()
	}
 
};