Protected Cpp Code Example

Example: protected in c++

#include <iostream> // Visibility is how visible certain members or methods of class are , who can see them ,who can call them and who can use them //Visibility has no effect on performance of your program it is ust for organizing code //Three basic visibility modifers are: //1 private //2 public //3 protected //default visibility of a struct is public //default visibility of class is private  class Entity { protected://means all sub classes and base class can access these functions and variables butcan't be accessed outside classes 	int P; 	void InitP () { 		P = 0; 		//initializes P to 0 	} public://Pubic methods and variables can be accessed inside and outside of the class 	int a, b; 	void Init() { 		a = 0; 		b = 0; 	} private://only entity class can read and write the variables exeption is friend 	int X , Y; 	void print(){ 		// Content 		// only this function can be acessed inside the class unless you use friend keyword 	} public: 	Entity() { 		X = 0;// can initialize x inside the class but can't access it from outside the class unsless you use friend keyword  	}  }; class Player : public Entity// class palyer is a sub class of  class Entity { public: 	Player() { 		//X = 2;	// Error can't access the private members from base class 		//print();	// can't access it in sub class because it is private  		a = 1;	// can acces it because it is public in base class 		b = 1;	// can acces it because it is public in base class 		Init(); // can acces it because it is public in base class 		P = 0;	// can access it in subclass because its visibility is protected 		InitP(); //can access it in subclass because its visibility is protected 	} 	  }; int main() { 	Entity e1; 	Player a; 	//e1.x;	//error can't access private members from here 	//e1.print(); // error inaccessible due to its visibility being private 	e1.a = 5;//can access from here because it's visibility is public  	e1.Init();//can access from here because it's visibility is public 	a.a = 5;//can access from here because it's visibility in base class is public  	a.Init();//can access from here because it's visibility in base class is public 	//e1.P;	//can't access it because  visibility is protected 	//e1.InitP; //can't access it because  visibility is protected 	// a.P;		//can't access it because  visibility is protected in base class 	// a.InitP; //can't access it because  visibility is protected in base class 	std::cin.get();