Thread: Prototype for '' does not match any in class error

Hi,

New to c++ and have an error that I cannot resolve. Thinking I've just made a very basic mistake and cannot see it.

The error is "prototype for 'void Menu::newItem(std::string, std::string, int)' does not match any in class 'Menu'"

I am certain they match, all similar stack overflow questions were trying to pass too many variables or had different return types which is why this seems so strange.

menu.h

Code:

#ifndef MENU_H
#define MENU_H


#include <string>
using std::string;
#include <iostream>
#include "item.h"
//#define MAXLEN 20


class Menu {
private:
        string _fName;
        string _mName;
        Item _db[20]; 
        int _nElems;
public:
        Menu(string mName) : _fName(""), _mName(mName), _nElems(0) {  };
       
        void newItem(string category, string description, int price);
        
        void display();
        
};
#endif

menu.cpp

Code:

#include "menu.h"
#include <string>
using std::string;
#include <iostream>
using std::cout;
using std::endl;




void Menu::newItem(string category, string description, int price){
        _db[_nElems] = Item(category, description, price);
        _nElems++;
}


void Menu::display(){
        string div = 
        "+--+-------+---------------------------------+-----+\n";
        cout << div <<
        "|No|Cat.   |Description                      |Price|\n" << div;
        for(int i = 0; i < _nElems; i++) {
                _db[i].display(i);
        }
        cout << div;
}

Any help would be greatly appreciated!

Unfortunately your suggestions made no difference.

Originally Posted by laserlight

Other things to tell us: which line does the error reference? What's in item.h?

in menu.cpp:

Code:

 void Menu::newItem(std::string category, std::string description, int price){

and in menu.h ([ERROR] candidate is: void Menu::newItem()):

Code:

         void newItem(std::string category, std::string description, int price);

Originally Posted by Salem

Which compiler/IDE are you using?

Dev C++

Originally Posted by Salem

You're using the Orwell one and it doesn't work?

I commented out Item (not that it should matter for the purpose of the exercise), and it compiles just fine here

Yes, definitely using Orwell version 5.11.

I also managed to get the code to compile today by moving the menu constructor out of the header file. Not sure how this error occurred and I'm not sure why it has gone away.

If I had to guess I'd say the error occurred as I updated the newItem function and the compiler still expected to see the old parameters? Still, I don't think this explains why it disappeared today once I moved the constructor.

Regardless thanks for the help!