#include <iostream>
using namespace std;
class Matrix
{
public:
long int **Matr;
long int n;
void Create()
{
Matr = new long int*[n];
for (int z = 0; z<n; z++)
Matr[z] = new long int[n];
}
// constructors and destructor
Matrix() : n(5) { Create(); }
Matrix(long int i) : n(i) { Create(); }
// Copy constructor
Matrix(Matrix& N)
{
n = N.n;
Matr = new long int*[n];
for (int i = 0; i < n; i++)
Matr[i] = new long int[n];
for (int i = 0; i < n; i++)
{
for (int j = 0; j < n; j++)
{
Matr[i][j] = N.Matr[i][j];
}
}
}
Matrix& operator=(const Matrix& N)
{
// copy to temporary matrix
long int tmpN = N.n;
long int** tmpMatr = new long int*[tmpN];
for (int i = 0; i < tmpN; i++)
tmpMatr[i] = new long int[tmpN];
for (int i = 0; i < tmpN; i++)
{
for (int j = 0; j < tmpN; j++)
tmpMatr[i][j] = N.Matr[i][j];
}
// swap
long int** swapMatr = Matr;
long int swapN = n;
Matr = tmpMatr;
n = N.n;
// deallocate old Matr
for (int z = 0; z<swapN; z++){
delete[] swapMatr[z];
}
delete[] swapMatr;
return *this;
}
Matrix operator *(Matrix &mx)
{
int i,j,k,num;
Matrix result(n);
for (int i = 0; i < n; i++)
for (int j = 0; j < n; j++)
num = 0;
for (int k = 0; k<n;k++){
num += Matr[i][k] * mx.Matr[k][j];
}
result.Matr[i][j] = num;
return result;
}
~Matrix()
{
for (int z = 0; z<n; z++){
delete[] Matr[z];
}
delete[] Matr;
}
void Display()
{
for (int i = 0; i<n; i++)
{
for (int j = 0; j<n; j++)
{
cout << Matr[i][j];
}
cout << endl;
}
}
Matrix operator +(Matrix &mx)
{
Matrix result(mx.n);
for (int i=0; i < n; i++){
for (int j=0; j < n; j++){
result.Matr[i][j] = Matr[i][j] + mx.Matr[i][j];
//cout << result.Matr[i][j] << "\n";
}
}
return result;
}
};
int main(){
Matrix M(2);
M.Matr[0][0] = 0;
M.Matr[0][1] = 1;
M.Matr[1][0] = 2;
M.Matr[1][1] = 3;
Matrix N(2);
N.Matr[0][0] = 0;
N.Matr[0][1] = 1;
N.Matr[1][0] = 2;
N.Matr[1][1] = 3;
Matrix C;
C= M+N;
cout << C.Matr[0][0];
return 0;
}
