// header file Matrix class

#ifndef MATRIX_H
#define MATRIX_H

class Matrix{

 public:

  Matrix(double a=0, double b=0, double c=0, double d=0 );
  Matrix(const Matrix& m);
  double det();
  bool isSingular();
  Matrix inverse();
  void print();
 private:
  double a_, b_, c_, d_;
};

#endif