How can I initialize 2d array with a list of 1d arrays?

Question

How can I initialize 2d array with a list of 1d arrays?

void main()
{
    int a[] = { 1,2,3 };
    int b[] = { 4,5,6 };
    int array[][3] = { a,b };
}
         


        

Answer 1

Use std::array.

auto a = std::array{ 1,2,3 };
auto b = std::array{ 4,5,6 };
auto array = std::array{ a,b };

Demo