#include <iostream>
int main() {
int arr[2][3] = {
{1, 2, 3},
{4, 5, 6}
};
int rows = sizeof(arr) / sizeof(arr[0]);
int cols = sizeof(arr[0]) / sizeof(arr[0][0]);
for (int i = 0 ; i < rows; i++) {
std::cout << '\n';
for (int j = 0 ; j < cols; j++) {
std::cout << arr[i][j] << ' ';
}
}
}
/*
run:
1 2 3
4 5 6
*/