2dArrayRowColSum

#include <iostream>

int main()
{
    const int rows = 5;
    const int cols = 9;

    int arr[rows][cols]{};
    int colSum[cols]{};
    int sum = 0;

    for (int y = 0; y < rows; y++)
    {
        for (int x = 0; x < cols; x++)
        {
            arr[y][x] = rand() % 10;
            sum += arr[y][x];
            std::cout << arr[y][x] << '\t';
            colSum[x] += arr[y][x];
        }

        std::cout << sum << '\n';
        sum = 0;
    }
    std::cout << '\n';
    for (int x = 0; x < cols; x++) { std::cout << colSum[x] << '\t'; } std::cout << '\n';
}