how to make array of arrays in c++ code example

Example 1: how to make an array c++

int foo [] = { 16, 2, 77, 40, 12071 };

Example 2: how to make a array in c++

// datatype var_name[howmuch value you need to store] = {values, values}
int a[5] = {1, 2 3, 4, 5};