1 #include "matrix2.h"
 2 
 3 int main()
 4 {
 5    Matrix m(3, 3);
 6    m[0][0] = m[1][1] = m[2][2] = 1;
 7    m[0][1] = m[1][2] = 2;
 8    Matrix a = 2 * m;
 9    Matrix b(4, 4);
10    b = m * m;
11    cout << a << "\n";
12    cout << b << "\n";
13    cout << a + b;
14    return 0;
15 }