CODEWITHSUNDEEP
c++vectorvisual-studio-2015headername-lookup
HeHacz
HeHacz

Reputation: 161

Error C4430 missing type specifier - int assumed. Note: C++ does not support default-int Generator

I have a problem with the following code:

Generator.h:

#pragma once
class Generator
{
public:
    friend class BagObject; 
    Generator(void);
    ~Generator(void);
    ...
    void generator(int);
private:
    BagObject *object;
    vector<BagObject> data; //Error c4430
};

And this is the error:

error C4430: missing type specifier - int assumed. Note: C++ does not support default-int

(There are 6 more errors but I believe that they should disappear after solving the above problem.)

Generator.cpp

#include "stdafx.h"
#include "Generator.h"
#include "BagObject.h"
#include <iostream>
#include <vector>
#include <ctime>

using namespace std;

Generator::Generator(void)
{
    srand(time(NULL));
}

Generator::~Generator(void)
{
    data.clear();
}

void Generator::generator(int ld)
{
    for (int i = 0; i<ld; i++)
{
    object = new BagObject(rand(),rand(),i);
    data.push_back(object);
    }
}

int main()
{
    Generator *g = new Generator;
    g->generator(10);
    return 0;
}

Upvotes: 15

Views: 77331

Answers (4)

Aashish
Aashish

Reputation: 108

I know your problem is solved but in My case the same error was caused due to cyclic includes (i.e. I had accidentally included the .h file in one of the .h file included in it)

TextureManager.h (The file with the error)

// This is TextureManager.h
#pragma once
#include "Game.h"
#include "GameObject.h"

/*
 texture manager class
*/

GameObject.h

// This is GameObject.h
#pragma once
#include "game.h"
#include "TexutureManager.h" // Accidental
/*

*/

I thought it may be worth noting this is also one of the ways to get this error.

Upvotes: 1

ajeh
ajeh

Reputation: 2784

Other answers are correct, but cryptic. In plain English, your header does not know about BagObject class. You included BagObject.h in the .cpp, but you should have included it in the .h.

It also does not know about vector for the same reason.

I am guessing, you were under impression that .cpp had to use #include, but .h did not. This is a common misunderstanding of beginners in C++. Headers need to include all referenced class declarations, hence you need to elevate your includes from .cpp into your .h.

Move two mentioned includes into the header and it will work.

Upvotes: 11

Vlad from Moscow
Vlad from Moscow

Reputation: 310980

Either you forgot to include header

#include <vector>

or forgot to write directive

using namespace std;

In any case it would be better to write

#include <vector>

//...

std::vector<BagObject> data;
^^^^^

You have to include the header <vector> in all headers where there is a reference to std::vector.

Upvotes: 17

M.M
M.M

Reputation: 141576

vector may not be instantiated with an incomplete type. In order to have vector<BagObject> data; in the header, the header must also have #include "BagObject.h".

(This is in addition to the changes recommended in Vlad's answer)

Upvotes: 3

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