Building the basics of any c++ program.

[Aseel]

Good morning programmers,

I'm trying to put the basics of any c++ program consists of 3 files. One for the main function, and one for class definition and another for the member functions of the class.

So I wrote this for the main file:

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

int main()
{
    sort task;


    
system("pause");
return 0;
}

And this for sort.h:

using namespace std;

class sort
{
    public:
        sort();
        ~sort();
        
    private:
};

And this for sort.cpp:

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

//--------- Constructor ----------
sort::sort()
{
}

//--------- Destructor -----------
sort::~sort()
{
}

But I get an error when I compile the program. I have checked it so many times and couldn't figure it out.Could you help me?

I need a strong basics to continue learning more complicated stuff in C++. If you have any advice to make it well-built.
Sometime #ifndefine is added in the header file, is it necessary here?

Thank you!

[firedraco]

Don't put using stuff in your header files.

What exactly is the error you are getting?

[Aseel]

Hi Firedraco,

OK, I deleted "using". This is the error:

In function 'int main()':
'sort' undeclared (first use this function).

I'm using Dev-C++ by the way.

[firedraco]

That's odd. You shouldn't be getting that error...I have no idea why that would be happening unless somehow sort.h isn't getting included, but that would be giving you a different error.

Btw, in this case your wouldn't need #ifndef stuff in your header file, but it's probably a good idea to learn to do it anyway.

[Aseel]

I guess I found it! The problem was with the word "sort", it seems like reserved word.

I had changed it -in the program code- to "sort1" and it works!!! Hah :)