32         Matrix result;  in operator -()  local
35                 result.array[i][j] = -x.array[i][j];  in operator -()
36         return result;  in operator -()
39         Matrix result;  in operator +()  local
42                 result.array[i][j] = x.array[i][j] + y.array[i][j];  in operator +()
43         return result;  in operator +()
46         Matrix result;  in operator -()  local
49                 result.array[i][j] = x.array[i][j] - y.array[i][j];  in operator -()
50         return result;  in operator -()
53         Matrix result(0);  in operator *()  local
57                     result.array[i][j] += x.array[i][k] * y.array[k][j];  in operator *()
58         return result;  in operator *()