#include <iostream>
#include <string>

//#include <cstddef>

using namespace std;

template <typename T>
class Foo {
  T x;
  static int count;
public:
  Foo() { 
    x = 0; 
    count += 1;
  }
  T getX(void) { return x; }
  int howMany(void) { return count; }
  static int getCount() {return count;}

};
template <typename T>

int Foo<T>::count = 0;

int main(void) {
    Foo<int> a;
    cout << "x in a " << a.getX() << endl; // prints 0
    Foo<int> b;
    cout << "how many Foo<int> " << b.howMany() << endl; // prints 2
    Foo<double> c;
    cout << "how many Foo<double> "<< Foo<double>::getCount() << endl; // prints 1

    cout << Foo<int>::getCount() << endl; // prints  2

    cout << "hello " << endl;
    cout << stoi("456",nullptr,10) << endl;

}