C++ basic question regarding constructors and destructors.

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C++

Hello,

I have created basic programs in the past using constructors and destructors but I do not understand why (using Visual Studio 2019) these errors are coming up.

Language.h

#ifndef LANGUAGES_H_ 
#define LANGUAGES_H_ 

class Languages {
public:
	void show();
Error here:explicit type is missing (int assumed)-->   	Language();
Error: Function definition for ~Language not found-->	~Language();
};

#endif /* LANGUAGES_H_ */ 

-----------------------------------------------------
**NOTE: Error is showing "Explicit type is missing ("int" assumed).

Languages.cpp

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

using namespace std;

Error appears on this line-->Languages::Language() {

}

Languages::~Language() {

}

What I have tried:

I have no idea what I am doing but I am having fun. I have progressed to the point where I realise that perhaps it might be a good idea to understand what the errors actually mean.

What I have tried:
1. I looked on Stack Overflow and one suggestion was to add void to the constructor in the header file but that did not resolve anything.
2. I have also tried adding int and string but the errors are still there.