Files not linking in C++

Question

So I'm taking the C++ Intermediate Course. I use Android mobile. I was taking the "Seperate Files for Classes" lesson in the course where they said about creating seperate file for the prototypes (.h) and creating a source file that uses that file(.cpp). I did it in QuickEdit and tried some other apps, but all of them were returning error that they could not find the file.
Please note before replying:

• My files were in the same folder together, no different folders or subfolders.

• I'm using Android Phone

• The file name for linking and the file's name are exactly the same, with matching case

When I run the code, I get this error:

main.cpp:2:10: fatal error: 'MyClass.h' file not found
#include "MyClass.h"
^~~~~~~~~~~
1 error generated.

Answer 1

I tried to simulate your situation, and it's true QuickEdit didn't get the thing done, not sure why though.

But good news is - it does work in Cxxdroid app. Just a class declaration in header (with only 1 public method for testing), definition of the public method in source, object instantiation and the public method call in source (main function), that's it :)

Answer 2

Hi Afnan,

Yes, to my learner level of understanding, that's an excellent example, and it's good to hear it works on your end.

Nice code formatting and bit of code comments as reminder, for latter reads...

Good job! keep it up!

Answer 3

Since it is a "file not found" error, then the problem has to be with finding the file. If your main.cpp is in a subfolder, maybe add that to the include path and see if that helps. If you are using Linux, make sure your filename is MyClass.h and not myclass.h. Make sure the filename matches and matches case.

Answer 4

If you are on Linux, you should probably add it this way.....

#include "./MyClass.h"

Answer 5

Ipang Tysm, I followed your method and it worked. But just for clarification still, this is how I do it right?:

MyClass.h:

#ifndef MYCLASS_H
#define MYCLASS_H

class MyClass
{
public:
MyClass(); // Constructor declaration
~MyClass(); // Destructor declaration
void sayHello(); // Test method to call in main
};

#endif // MYCLASS_H

MyClass.cpp:

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

// Constructor definition
MyClass::MyClass() {
cout << "MyClass created!" << endl;
}

// Destructor definition
MyClass::~MyClass() {
cout << "MyClass destroyed!" << endl;
}

// sayHello method definition
void MyClass::sayHello() {
cout << "Hello from MyClass!" << endl;
}

int main() {
MyClass obj; // Create MyClass object
obj.sayHello(); // Call the sayHello method

return 0;
}

Answer 6

Afnan Irtesum Chowdhury
what app are you using? Folder access is very restricted on Android phones. It might be a permissions issue.

If you read the lessons carefully, Sololearn assumes you are using CodeBlocks on a pc.There is even an intruction on how to set it up. That part was not meant to be run on Sololearn.

You can learn the basics in your phone, but to really complie and run programs, you will need a pc or a laptop.

Answer 7

Jan Jerry Hobby I'm on Android, Phone. And the files are in the same folder together as I already said

Answer 8

Afnan Irtesum Chowdhury Android is based on Linux, even though it's written in Java, so you should probably still use the method I mentioned.