2D array interface

twodinterface.h

#include <iostream>

template <typename TwoD>
void print2D(const TwoD& mat, size_t m, size_t n) {
	for (size_t row = 0; row < m; ++row) {
		for (size_t col = 0; col < n; ++col)
			std::cout << mat[row][col] << ' ';
		std::cout << std::endl;
	}
}