Object Oriented Programming with C++, Second Edition

24.14 OTHERS

const int THREE =3 ;

class Matrix

    { private:      int X[THREE][THREE];    public :      friend void multiply(Matrix A, Matrix B, Matrix &C);      void show();      Matrix();      Matrix(int box[9]);      void set(int i, int j, int val) ;      int get(int i, int j ) ;  } ; const int MAX = 10 ;

class Mat10

    { private:      int X[MAX][MAX];      int N ;    public :      friend void multiply(Mat10 A, Mat10 B, Mat10 &C);      void show();      Mat10();      Mat10(int dimN) ;      void init(int box[], int num); // initialisation      void set(int i, int j, int val) ;      int get(int i, int j ) ;      int getN();      int is_diagonal() ; // 1 true 0 false  };

Following classes use declaration:

typedef char str20[20]

class Planet ...