pimpl_pattern.cpp

class MyClassImpl;

class MyClass {
public:
    MyClass();             // Constructor
    ~MyClass();            // Destructor
    void DoSomething();    // Public member function

private:
    MyClassImpl* pImpl;    // Opaque pointer to the implementation class
};


class MyClassImpl {
public:
    void DoSomethingInternal() {
        // Implementation details go here
    }
};

MyClass::MyClass() : pImpl(new MyClassImpl) {}

MyClass::~MyClass() {
    delete pImpl;
}

void MyClass::DoSomething() {
    pImpl->DoSomethingInternal();
}

int main() {
    MyClass obj;
    obj.DoSomething();
    return 0;
}