array_by_reference.cpp

#include <cstdio>

template <std::size_t N>
void printArray(const int (&arr)[N]) {
  for (int i = 0; i < N-1; i++) {
    printf("%d, ", arr[i]);
  }
  printf("%d\n", arr[N-1]);
}

int main(void) {
  int a[] = {1,2,3};
  int b[] = {2,4,6,7,10};
  printArray(a);
  printArray(b);
}