تحديات برمجيةالتحدي الخامس - حل التمرين الخامس بلغة C++

#include <iostream>

int main() {

    const int rows = 3;
    const int cols = 3;
    int matrix[3][3];

    int sumOnDiagonals = 0;
    int sumAboveDiagonals = 0;
    int sumUnderDiagonals = 0;

    for (int i = 0; i < rows; i++)
    {
        for (int j = 0; j < cols; j++)
        {
            std::cout << "Enter matrix[" << i << "][" << j << "]: ";
            std::cin >> matrix [i][j];
        }
    }

    for (int i = 0; i < rows; i++)
    {
        for (int j = 0; j < cols; j++)
        {
            if (j > i)
            {
                sumAboveDiagonals += matrix[i][j];
            }
            else if (j < i)
            {
                sumUnderDiagonals += matrix[i][j];
            }
            else
            {
                sumOnDiagonals += matrix[i][j];
            }
        }
    }

    std::cout << "\nNumber of elements above diagonals: " << sumAboveDiagonals;
    std::cout << "\nNumber of elements under diagonals: " << sumUnderDiagonals;
    std::cout << "\nNumber of elements on diagonals: " << sumOnDiagonals;

    char end; std::cin >> end;
    return 0;

}