Return array in a function

Question

I have an array int arr[5] that is passed to a function fillarr(int arr[]):

int fillarr(int arr[])
{
    for(...);
    return arr;
         


        

Answer 1

In C++11, you can return std::array.

#include 
using namespace std;

array fillarr(int arr[])
{
    array arr2;
    for(int i=0; i<5; ++i) {
        arr2[i]=arr[i]*2;
    }
    return arr2;
}