multidimensional vector

[odogg]

Hi
How to create a multidimensional vector in C++,
and assign all the elements to default values of zero?

[MiiNiPaa]

How to create a multidimensional vector in C++,

std::vector<std::vector<int>>

and assign all the elements to default values of zero?

#include <vector>
#include <iostream>


int main()
{
    std::vector<std::vector<int>> arr {{0, 0, 0, 0}, {0, 0, 0, 0},
                                       {0, 0, 0, 0}, {0, 0, 0, 0}};
    for(const auto& v: arr) {
        for(const auto i: v)
            std::cout << i << ' ';
        std::cout << '\n';
    }
}

[cire]

or:

#include <vector>
#include <iostream>


int main()
{
    std::vector<std::vector<int>> arr(4, std::vector<int>(4)) ;

    for(const auto& v: arr) {
        for(const auto i: v)
            std::cout << i << ' ';
        std::cout << '\n';
    }
}