Constructor Error

[rxfeliciano]

Hello,
I am getting a ISO C++ forbids declaration of Multiset() with no type [-fpermissive] whenever I try to compile my multiset.cpp file which includes multiset.h. Any help would be appreciated. I am using cygwin btw.

//My h file for class named Multiset
  #ifndef MULTISET_H_1234
#define MULTISET_H_1234

#include "items.h"

class Multiset{
	public:
		MultiSet();
		void add_item();
		void remove_item();

	private:
		vector <Item> items;
};
#endif
//My multiset.cpp file
#include <iostream>
#include <string>
#include <vector>
#include "multiset.h"
#include "items.h"

using namespace std;

Multiset::Multiset(){
	items.resize(0);
}
void Multiset::add_item(string name, int quantity){
	items.push_back(Item(item, quantity));
}
void MultiSet::remove_item(string name){
	for(int i = 0; i< items.size(); i++){
		if( name == items[i].get_name()){
			items.erase(items[i]);
		}
	}
}

[helios]

class Multiset{

MultiSet();