Why do I get the error “error: unknown type name 'virtual'” when trying to compile this code?

Question

Code:

struct IRenderingEngine {
    virtual void Initialize(int width, int height) = 0;
    virtual void Render() const = 0;
    virtual void UpdateAnimation(flo         


        

Answer 1

Changing the name of file "AppDelegate.m" to "AppDelegate.mm". It's correct!