Matrix Multiplication with operator overloading

Question

I am attempting to create an overloaded operator for a matrix class that I have built. My matrix class stores the matrix in a dynamically allocated multidimensional array. I

Answer 1

1. i actually goes from 0 to this->rows - 2 (because of i < n-1 for i = n-1 is false). Same for other loops. This seems not to be correct behaviour for matrices multiplication.
2. Nevertheless, this code fragment seems to be correct. Can you provide us with full class implementation?

P.S. If T is type of matrix elements, then type of sum_elems should be T.