#ifndef UTILS_H_
#define UTILS_H_

#include <iosfwd>
#include <string>

void hello(std::ostream& os);

class hello_kitty {
public:
  hello_kitty(const std::string& name);
  const hello_kitty& print(std::ostream& os) const;
  
private:
  std::string name_;
};

#endif