#include <Arduino.h>
int y;
class A
{
  public:
   int x(){
     y=y+1;
     Serial.println("class A"); 
     return y;
     
   };
   virtual void f(int c) { 
      Serial.println("class A"); 
      //c=x;
   }
};

class B : public A
{
  public:
   // int y;

    int x(){
     y=y+1;
     Serial.println("class B");
     return y;
      
    };
    
    virtual void f() {
          Serial.println("class B"); 
    }

};


A *a; 
B *b;
A xValue;
B xValue2;


const int TEST_PIN = 10;

void setup(){
Serial.begin(9600);

   //a=new A(); 
   //b=new B();

   pinMode(TEST_PIN,OUTPUT);
}

void loop(){
  
 // myFunction();
  delay(2000);
  int bVal = xValue.x();
  Serial.println("test bVal ");
  Serial.println(bVal);

}
 
 void myFunction(){
   //int getX = xValue.x();
   Serial.println("test");
   //Serial.println(getX);
  /* int getX2 = xValue2.x();
   Serial.println("test");
   Serial.println(getX2);*/
   //a=new A(); 
   //b=new B();
   //Serial.println(x);
 }