#pragma once
#include <iostream>
using namespace std;

class matrix
{
	private:
		
		double *a;
		int n, m;

	public:

		matrix (int = 0,int = 0, double* = NULL);
		matrix (const matrix&);
		~ matrix ();

		bool umnojenie (const matrix& ) const;
		bool summa (const matrix& ) const;

		const double* operator[] (int i) const;
		double* operator[] (int i);

		matrix& operator = (const matrix&);
		matrix& operator +=(const matrix&);
		matrix& operator -=(const matrix&);
		matrix& operator *=(const matrix&);
		matrix& operator *=(const double);

		friend matrix operator * (const matrix&, const matrix&);
		friend matrix operator * (const matrix&, double);
		friend matrix operator * (double , const matrix&);
		friend matrix operator + (const matrix&, const matrix&);
		friend matrix operator - (const matrix&, const matrix&);

		int get_Row () const;
		int get_Col () const;
	
		friend ostream& operator << (ostream&, const matrix &);
};