////////////////////////
/////counter.h file/////
////////////////////////
#ifndef _COUNTER_H
#define _COUNTER_H
class Counter{
 
    private:
       int counter;
       int limit;
       static int nCounters;
    public:
        Counter(int arg, int arg);
        void increment();
        void decrement();
        int getValue();
        static int getNCounters();
};
#include "counter.cpp"
#endif
 
//////////////////////////
/////counter.cpp file/////
//////////////////////////
#include <string>
#include "counter.h"
 
Counter::Counter(int a, int b){
   counter=a;
   limit=b;
   if (&nCounters==NULL){
   nCounters=0;
   }  
   nCounters++;
}
 
void Counter::increment()
{
    if (counter<limit) counter++;
 
 }
void Counter::decrement()
{
  if(counter>0) counter--;
}
 
int Counter::getValue(){
return counter;
}
 
int Counter::getNCounters(){
int dummy=nCounters;
return dummy;
}

int Counter::nCounters = 0;