Link error?

[ojima]

Hello everybody!

I've recently started programming in C++, so I don't know much about errors. I've just created a new program, but when I'm trying to execute the code, Dev-C++ (the compiler I'm using) shows 2 errors.

  [Linker error] undefined reference to `WinMain@16' 
  ld returned 1 exit status  

It doesn't show a location, so I don't know where the error is.
Does anybody know what this means?

- Ojima

[Davichococat]

Could you submit yours code which you think is causing the error, the whole file, or just the part the compiler points to?

Thanks.

[Moschops]

It means your project settings are bad. ou need to pick whatever passes for just plain C++ code. No Win16 (Win16? Yikes - I presume you're not using a pre Windows 95 OS?) or other such settings.

Which version of Dev-C+pp are you using? If it's from here:

http://www.bloodshed.net/devcpp.html

please stop using it and get something else.

[ojima]

@Davichococat
It doesn't say in what line the code is, so I can't tell you where the mistake could be.

@Moschops
What Dev-C++ should I use then?

[Moschops]

The mistake is that your project settings have told the linker that your code contains a WinMain16. It's not a line of your code causing the problem - it's that your code (and all the libraries it is looking in) doesn't contain what it's looking for.

Here is an article talking about not using Dev-C++ and giving some fine alternatives.
http://www.cplusplus.com/articles/36vU7k9E/

[ojima]

@Moschops
Okay, I'm now using Code::Blocks 10.5, but I'm still getting the same error,

undefined reference to `WinMain@16'

What should I do to fix this?

[Moschops]

Let's see the code, and what compiler are you using?

[ojima]

@Moschops

Okay, here's the code:

#include <iostream>
#include <string>
using namespace std;

string aName[9] = "";
string aPassword[9] = "";
int lNumber, lPassword, aCurrent, aNumber, aStatus[9];

int Setup(){
    for (int i = 0; i < 9; i++)
    {
         aStatus[i] = 0;
    }
    aName[0] = "admin";
    aPassword[0] = "password";
    aStatus[0] = 3;
    aNumber = 1;
    return 0;
}

int dLogin();
int dVersiondata();

int dLogin()
{
    dVersiondata();
    cout << "Accounts\n";
    for (int i=0;i<9;i+=1)
    {
        if (aStatus[i] > 0)
        {
                      cout << i+1 << ". " << aName[i] << endl;
        }
    }
    cout << "11. Shut down\n";
    system("PAUSE");
    return 0;
};

int dVersiondata()
{
    system("CLS");
    cout << "AmijOS C++\n\tAlpha 0.0.1 - Copyright 2012 by OjimaProductions\n";
    return 0;
};

It should create a simple screen, it's not much yet. It's a program I first programmed in BASIC, but when I saw the limited possibilities in BASIC, I thought I might wanted to reprogram it in C++.

- Ojima

[Moschops]

There's no main function. Where does your code start? Nowhere, because there's no main function. C++ programs start at main.

[ojima]

hmm, tried it, I renamed Setup to main (btw, thanks, didn't know that :))
Now I'm getting no more warnings or errors. Thanks!
(and now I see what a complete n00b I am...)

- Ojima