Cross counting X pattern in a vector

diagonal_algorithm.cpp

#include <iostream>
#include <vector>
using namespace std;

// Defining rows and columns of
// vector of vectors

int main()
{
	int diagonalRight = 0;
	int diagonalLeft = 0;
	int absDifference = 0;

	// Initializing the vector of vectors
	vector<vector<int>> vect
	{
		{1, 2, 3},
		{4, 5, 6},
		{10, 8, 9}
	};

	// Print the values we just declared
	for (int i = 0; i < vect.size(); ++i)
	{
		for (int j = 0; j < vect[i].size(); ++j)
		{
			if (i == j)
			{
				diagonalRight += vect[i][j];
			}

			if (i == vect.size() - 1 - j)
			{
				cout << "vect[" << i << "]" << "[" << j << "]" << endl;
				diagonalLeft += vect[i][j];
			}
		}
	}

	absDifference = diagonalRight - diagonalLeft;

	if (absDifference < 0)
	{
		absDifference *= -1;
	}

	cout << absDifference << endl;

	return 0;
}