// two-bit state and operations
//
#ifndef B2_H_
#define B2_H_

class B2
{
 private: int b1, b0;

 public: B2(); void print(const char msg[]) const;

  void X(); int M(); // NOT, measure - bit 1

  void CX(); // controlled-NOT on bit 0 controlled by bit 1
};

#endif // B2_H_