Vector of arrays in C++

cpp_no_assignment.cc

void main() {
    int a0[4] = {0, 1, 2};
    int a1[4] = a0;
}

vec_arr.cc

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

int main() {
    vector<std::array<int, 3>> vec;
    
    array<int, 3> a0 { {0, 1, 2} };
    array<int, 3> a1 { {3, 4, 5} };
    array<int, 3> a2 { {6, 7, 8} };
    
    vec.push_back(a0);
    vec.push_back(a1);
    vec.push_back(a2);
	
    for(array<int, 3> i : vec) {
        cout << i[0] << " " << i[1] << " " << i[2] << endl;
    }
    
    return 0;
}