C++ correct way to return pointer to array from function

Question

I am fairly new to C++ and have been avoiding pointers. From what I\'ve read online I cannot return an array but I can return a pointer to it. I made a small code to test it

Answer 1

you can (sort of) return an array

instead of

int m1[5] = {1, 2, 3, 4, 5};
int m2[5] = {6, 7, 8, 9, 10};
int* m3 = test(m1, m2);

write

struct mystruct
{
  int arr[5];
};


int m1[5] = {1, 2, 3, 4, 5};
int m2[5] = {6, 7, 8, 9, 10};
mystruct m3 = test(m1,m2);

where test looks like

struct mystruct test(int m1[5], int m2[5])
{
  struct mystruct s;
  for (int i = 0; i < 5; ++i ) s.arr[i]=m1[i]+m2[i];
  return s;
}

not very efficient since one is copying it delivers a copy of the array