hand write answers please

4. (15 points) Find errors (and write reasons briefly) in the following code snippets: #include using namespace std; class Rect { private: int width; bool IsWidthvalid() const; public: Rect(); Rect(int w); int GetWidth() const; void SetWidth(int w); int openWidth; }; Rect:: Rect() { width = 0; ) Rect:: Rect(int w) { width - W; } int Rect::GetWidth cout int main() { Rect r; r.width = 10; r.SetWidth(20); int wi = r.GetWidth(); int W2 = r.width; bool b = r.IsWidthvalid(); r.openWidth = 30; int w3 = r.openWidth; Rect r3(15, 17); }