In C++, Write a program that takes an input of integers into a 2-dimensional array of size 3x3:

int arr[3][3], and output to the user if it is an: upper triangular matrix, or a lower triangular matrix. If it is neither of those, output to the user that it is a normal matrix.

Put appropriate UI messages to the user.

Hint:

A square matrix is upper triangular if all its entries below the main diagonal are zero.

A square matrix is upper triangular if all its entries above the main diagonal are zero.