Does the following code fragment compile?

namespace helpers { int counter{1}; }
namespace helpers { int strength{2}; }
int main() {
  std::cout << helpers::counter << "\n";
  std::cout << helpers::strength << "\n"; 
  std::cout << helpers::Div2(8) << "\n"; 
}
namespace helpers { 
  int Div2(int value) { return value/2; }   
}