The Big Programming Thread - Page 721

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Thread Rules
1. This is not a "do my homework for me" thread. If you have specific questions, ask, but don't post an assignment or homework problem and expect an exact solution.
2. No recruiting for your cockamamie projects (you won't replace facebook with 3 dudes you found on the internet and $20)
3. If you can't articulate why a language is bad, don't start slinging shit about it. Just remember that nothing is worse than making CSS IE6 compatible.
4. Use [code] tags to format code blocks.

Manit0u

Poland17671 Posts

April 21 2016 21:30 GMT

#14401

On April 22 2016 06:14 Wrath wrote:
How to gain experience without job?

Try to contribute to some open source projects?
Write something on your own?
Become a wizard at a MUD? (I did that, awesome experience)

tofucake

Hyrule19193 Posts

April 22 2016 12:40 GMT

#14402

Intern, OSS, Freelance

waffelz

Germany711 Posts

April 24 2016 20:40 GMT

#14403

Uhm... I might be totally blind because I already code for a long time now, but whats wrong with this:


#pragma once
#include "Printer.h"
#include "Color.h"
#include "Printjob.h"
#include <String>
#include <vector>
#include <iostream>
#include <ctime>
#include <chrono>
#include <thread>
class Panel
{
private:
       someatributes


	Printer* printer;
        Color* color; //<- line which screws me
};

Visual Studio keeps telling me that in the marked line there is no type specified and no ";" in front of the "*" and I cant figure out why... What is the obvious thing I miss here? I suggest the error lies somewhere else and the message is just misleading, but I don't know where since the color.cpp/.h only contains trivial code. If I leave the line out, everything builds fine.

CoughingHydra

177 Posts

April 24 2016 21:06 GMT

#14404

Shouldn't class end with ";" ? I mean

class Panel
{
...
}; // <- here

zatic

Zurich15362 Posts

April 24 2016 21:10 GMT

#14405

On April 25 2016 06:06 CoughingHydra wrote:
Shouldn't class end with ";" ? I mean

class Panel
{
...
}; // <- here

~~You really can't find that out for yourself? ...~~
Never mind thought you were asking a genuine question.

waffelz

Germany711 Posts

April 24 2016 21:10 GMT

#14406

On April 25 2016 06:06 CoughingHydra wrote:
Shouldn't class end with ";" ? I mean

class Panel
{
...
}; // <- here

I just failed to copy that since there is quite some code in between. Fixed it in my example.

spinesheath

Germany8679 Posts

April 24 2016 21:18 GMT

#14407

On April 25 2016 05:40 waffelz wrote:
Visual Studio keeps telling me that in the marked line there is no type specified and no ";" in front of the "*" and I cant figure out why... What is the obvious thing I miss here? I suggest the error lies somewhere else and the message is just misleading, but I don't know where since the color.cpp/.h only contains trivial code. If I leave the line out, everything builds fine.

Can you use Color* anywhere else? Maybe the error is somewhere in color.h.

waffelz

Germany711 Posts

April 24 2016 21:20 GMT

#14408

Well... if I swap them around I can use Panel* but no longer Color* ^^... time to crawl through the whole code.

CoughingHydra

177 Posts

April 24 2016 21:22 GMT

#14409

On April 25 2016 06:10 waffelz wrote:

Show nested quote +

On April 25 2016 06:06 CoughingHydra wrote:
Shouldn't class end with ";" ? I mean

class Panel
{
...
}; // <- here

I just failed to copy that since there is quite some code in between. Fixed it in my example.

What about

 #include <String>

.
Try changing to lower case <string>.

EDIT:
Never mind, I forgot this is visual which I know nothing about, I'm using g++...

waffelz

Germany711 Posts

April 24 2016 21:25 GMT

#14410

On April 25 2016 06:22 CoughingHydra wrote:

Show nested quote +

What about

 #include <String>

.
Try changing to lower case <string>.

No luck. Changed it anyway though. To much java lately.

waffelz

Germany711 Posts

April 24 2016 21:32 GMT

#14411

Kind of found the error. I had #include "Panel.h" in color.h and printer.h, without it it runs fine HOWEVER, I need Color and Printer to know Panel as well and shouldn’t pragma once fix such problems? Gonne try it with #ifndef

EDIT: Nope, the errors get even weirder lol

Khalum

Austria831 Posts

April 24 2016 22:04 GMT

#14412

You don't really need to include anything here if you're just using pointers. Just use forward declaration for Printer and Color and include the headers in you cpp. Maybe that actually fixes your issues too.

Shield

Bulgaria4824 Posts

April 24 2016 23:04 GMT

#14413

#pragma once seems to work fine for me.

+ Show Spoiler +

Panel.h
+ Show Spoiler +


#pragma once

#include "Colour.h"
#include "Printer.h"

class Panel
{
public:
	Panel();
	~Panel();

private:
	Printer* _printer;
	Colour* _colour;
};

Printer.h
+ Show Spoiler +


#pragma once

#include "Colour.h"
#include "Panel.h"

class Printer
{
public:
	Printer();
	~Printer();
};

Colour.h
+ Show Spoiler +


#pragma once

#include "Printer.h"
#include "Panel.h"

class Colour
{
public:
	Colour();
	~Colour();
};

Why are you using raw pointers anyway?

Acrofales

Spain18219 Posts

April 25 2016 00:27 GMT

#14414

On April 25 2016 05:40 waffelz wrote:
Uhm... I might be totally blind because I already code for a long time now, but whats wrong with this:


#pragma once
#include "Printer.h"
#include "Color.h"
#include "Printjob.h"
#include <String>
#include <vector>
#include <iostream>
#include <ctime>
#include <chrono>
#include <thread>
class Panel
{
private:
       someatributes


	Printer* printer;
        Color* color; //<- line which screws me
};

Given that none of the suggestions so far worked, I'm going to suggest there is something in someatributes that is wrong. For starters, its spelling

Other than that, my main expectation is that there's something wrong in printer, rather than color. Did you try switching those two statements?

Note that the last time I coded c++ is a while back, but it doesn't look like the error is in the code you posted.

Blisse

Canada3710 Posts

April 25 2016 02:31 GMT

#14415

you really need to post all the code for the Color class because that's probably where the error is given that it doesn't understand that the class exists

did you add Color.cpp to your makefile?

waffelz

Germany711 Posts

April 25 2016 05:26 GMT

#14416

On April 25 2016 08:04 Shield wrote:
#pragma once seems to work fine for me.

+ Show Spoiler +

Panel.h
+ Show Spoiler +


#pragma once

#include "Colour.h"
#include "Printer.h"

class Panel
{
public:
	Panel();
	~Panel();

private:
	Printer* _printer;
	Colour* _colour;
};

Printer.h
+ Show Spoiler +


#pragma once

#include "Colour.h"
#include "Panel.h"

class Printer
{
public:
	Printer();
	~Printer();
};

Colour.h
+ Show Spoiler +


#pragma once

#include "Printer.h"
#include "Panel.h"

class Colour
{
public:
	Colour();
	~Colour();
};

Why are you using raw pointers anyway?

Because of reasons far beyond all human comprehension. + Show Spoiler +

(Mostly because of the retarded circumstances of this assignment and because of my prof

)

On April 25 2016 11:31 Blisse wrote:
you really need to post all the code for the Color class because that's probably where the error is given that it doesn't understand that the class exists

did you add Color.cpp to your makefile?

At the time I was working on windows.

Thanks for all the help, the problem remains a mystery... My last solution was to transfer the whole project to my laptop where everything build fine while still giving the same error on my desktop. Now after getting up, I tried my desktop again because I was to tired to remember having switched to my laptop AND EVERYTHING WOKRS?! The original project before the transfer as well as the only slightly modified version from my laptop.
Either it was too close to midnight or I am starting to lose my mind. It just doesn’t make sense and now I am really pissed off, having lost multiple hours on an apparently non-existent issue.

WolfintheSheep

Canada14127 Posts

April 25 2016 06:40 GMT

#14417

On April 25 2016 14:26 waffelz wrote:

Show nested quote +

Because of reasons far beyond all human comprehension. + Show Spoiler +

(Mostly because of the retarded circumstances of this assignment and because of my prof

)

Show nested quote +

You're officially a programmer now.

waffelz

Germany711 Posts

April 25 2016 07:04 GMT

#14418

On April 25 2016 15:40 WolfintheSheep wrote:
You're officially a programmer now.

haha, yeah. That the error is seemingly gone without reason is almost worse now lol.... I have a really hard time accepting that the compiler just had flatulence. There HAS to be a reason!
[image loading]

Khalum

Austria831 Posts

April 25 2016 09:29 GMT

#14419

You should really reconsider your way of using #includes. The way it looks every header includes every header. That's not how it should be done at all. Even if you use #pragma once.

Acrofales

Spain18219 Posts

April 25 2016 10:31 GMT

#14420

On April 25 2016 16:04 waffelz wrote:

Show nested quote +

Could be that you forgot to call "make clean". I know that has cost me headaches worth of debugging...

But yes, I think every programmer worth his salt has spent hours being frustrated at a problem, deep into the night. And the next morning it turns out that the problem was completely trivial to solve, and you do it in 2 lines of code and 3 minutes. Feeling both victorious and relieved, as well as incredibly frustrated at the same time.

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