add forward declaration

add classes

CPlusPlus/Classes/Entity.h

@@ -0,0 +1,17 @@
+#pragma once
+#include <string>
+
+class Entity
+{
+public:
+	Entity(); // declared
+	Entity(std::string name);
+
+	virtual std::string toString() { return "Entity"; } // declared & defined, only use that for one liners
+	std::string getName() { return _name; }
+	void setName(std::string name) { _name = name; }
+
+protected:
+	std::string _name = "";
+
+}; // IMPORTANT: always end with a semicolon