Class has no member named

Question

I have a problem with accessing a function from a class with the class object in my main function. I am just trying to make the object for the class and use that object to access the function inside that class's .cpp file. I keep getting an error and I even made the simplest program to test it and I still get an error.

Main:

#include <iostream>
#include "Attack.h"

using namespace std;

int main()
{
    Attack attackObj;
    attackObj.printShiz();
}

Class header:

#ifndef ATTACK_H
#define ATTACK_H

class Attack
{
    public:
        Attack();
        void printShiz();
    protected:
    private:
};

#endif // ATTACK_H

Class .cpp:

#include <iostream>
#include "Attack.h"
using namespace std;

Attack::Attack() {

}

void Attack::printShiz() {
    cout << "Test" << endl;
}

How do I fix this error? Everytime I try to access the printShiz() function in the Attack class by using an object in my main function, I get an error and it doesn't think this function exists within this class.

Error:

error: 'class Attack' has no member named 'printShiz'

Solution 1

I had a similar problem. It turned out, I was including an old header file of the same name from an old folder. I deleted the old file changed the #include directive to point to my new file and all was good.

Solution 2

I had similar problem. My header file which included the definition of the class wasn't working. I wasn't able to use the member functions of that class. So i simply copied my class to another header file. Now its working all ok.

Solution 3

Most of the time, the problem is due to some error on the human side. In my case, I was using some classes whose names are similar. I have added the empty() method under one class; however, my code was calling the empty() method from another class. At that moment, the mind was stuck. I was running make clean, and remake thinking that it was some older version of the header got used. After walking away for a moment, I found that problem right away. We programmers tends to blame others first. Maybe we should insist on ourselves to be wrong first.

Sometimes, I forget to write the latest update to disk and looking at the correct version of the code, but the compiler is seeing the wrong version of the code. This situation may be less a issue on IDE (I use vi to do coding).

Comments

[chris]

The code looks fine. Maybe it's trying to use an older version of the header.

[johnchen902]

Sometimes a "Rebuild All" fix everything.

[Rapture686]

Just tried it, getting the same error :/

[juanchopanza]

You should post some code that reproduces the problem. The code you posted looks fine.

[qwr]

suggest 2 : copy printShiz() and replace all with copied. sometimes what it is written seems equal but when you change to ANsi on notepad++ you see that under code is different. happen when you switch much between keyboard layouts

[Tony Delroy]

The problem must be with your include path, directories/filenames etc.. Which compiler are you using? If e.g. GCC, then you can use "g++ -E main.cc <other-includes-etc>" to get proprocessor-stage output that will show if the header you expect is being incorporated properly in the translation unit.

[Rapture686]

I'm using Codeblocks with the standard GNU GCC Compiler it came with. I just started coding so I don't know too much about what is wrong.

[Boynux]

would you please give me exact command you are using to compile your code? I'm afraid that you are not linking class.o object with your code properly.

[Rapture686]

@Boynux I'm really new to the whole coding thing so I dont know exactly what you mean by the command. I know that I'm using Codeblocks with the GNU GCC Compiler. When I go to the compiler settings under toolchain executables, it says the C++ compiler is mingw32-g++.exe

[Boynux]

open a terminal and witch to your program folder and then issue this command: mingw32-g++.exe main.cpp class.cpp -o main.exe then try to run main.exe

[Rapture686]

How do I do that? As I said I'm VERY new to coding. I just started a couple days ago. I just want to fix whatever is wrong so I can go back to learning how to code.

[Boynux]

what windows version do you use?

[Rapture686]

I am currently using Windows 7

[Boynux]

well goto start -> run -> type cmd.exe and enter then follow my previous comment.

[Rapture686]

I navigated to the program's folder and entered the command exactly and got a response: "'ming32-g++.exe' is not recognized as an internal or external command, operable program or batch file."

[SpongeBobFan]

so find mingw32-g++.exe and use its absolute path to call (like c:\some\folder\mingw32-g++.exe main.cpp class.cpp -o main.exe)

[Stefano Falasca]

Since you say you are new to programming let me give you a suggestion, always include your own headers first (see your main.cpp) so that you make sure that you are including everything you need in other files. Your example is just fine, this is just a suggestion!

[Rapture686]

Thanks for the advice! My current problem is currently keeping me from programming and I have no idea why it's happening so I'm kinda bummed out. Hopefully this problem will be fixed soon

[Boynux]

you may also consider testing your code here: compileonline.com/compile_cpp_online.php

[Tim Post]

Please move extended discussions to Stack Overflow Chat. Thank you.

[Rapture686]

Yes that is there, I just accidentally left it out of the post.

[Rapture686]

The toolchain I'm using is mingw32-g++.exe

[M.M]

If he "forgot to compile Class.cpp" that would give an undefined reference link error, not the compilation error shown

[Yiannis Mpourkelis]

This is the correct answer to the question. It happens sometimes. You copy a header file to another path and make changes to it, but because somewhere in your project you include the old header, changes to member functions, variables etc never appear and you get this kind of "strange" errors.