Answer 1

#include <iostream>
using namespace std;

int main() {
int sum = 0;
int array[2][3] = {{1,2,3},{4,5,6}};
for (int stp = 0; stp < 2; stp++){
for (int st = 0; st < 3; st++){
sum += array[stp][st];
}
}
cout<<sum;
return 0;
}