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Rooted by: Add numbers of an array
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  • Code 
    #include <array>

template <std::size_t L>
long
add_arr(std::array<int, L> arr)
{
  long result = 0;
  for (int i : arr) result += i;
  return result;
}

template long add_arr(std::array<int, 9> arr);
     Test Cases 
    #include <array>
#include <criterion/criterion.h>

template <std::size_t L>
long add_arr(std::array<int, L> arr);

Test(add_arr, all)
{
  std::array<int, 9> arr = {1, 2, 3, 4, 5, 6, 7, 8, 9};
  cr_assert_eq(add_arr<9>(arr), 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9);

  std::array<int, 9> arr2 = {1, -2, 3, 4, 5, 6, 7, 8, 9};
  cr_assert_eq(add_arr<9>(arr2), 1 + (-2) + 3 + 4 + 5 + 6 + 7 + 8 + 9);
}
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  • Code
    • #include <array>
    • template <std::size_t L>
    • long
    • add_arr(const unsigned long len, const int arr[len])
    • add_arr(std::array<int, L> arr)
    • {
    • long result = 0;
    • for
    • (
    • unsigned long i = 0;
    • i < len;
    • result += arr[i++]
    • );
    • for (int i : arr) result += i;
    • return result;
    • }
    • }
    • template long add_arr(std::array<int, 9> arr);
     Test Cases
    • #include<criterion/criterion.h>
    • #include <array>
    • #include <criterion/criterion.h>
    • long add_arr(const unsigned long len, const int[len]);
    • template <std::size_t L>
    • long add_arr(std::array<int, L> arr);
    • Test (add_arr, all) {
    • int arr[] = {1,2,3,4,5,6,7,8,9};
    • cr_assert_eq(add_arr(9, arr), 1+2+3+4+5+6+7+8+9);
    • int arr2[] = {1,-2,3,4,5,6,7,8,9};
    • cr_assert_eq(add_arr(9, arr2), 1+(-2)+3+4+5+6+7+8+9);
    • Test(add_arr, all)
    • {
    • std::array<int, 9> arr = {1, 2, 3, 4, 5, 6, 7, 8, 9};
    • cr_assert_eq(add_arr<9>(arr), 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9);
    • std::array<int, 9> arr2 = {1, -2, 3, 4, 5, 6, 7, 8, 9};
    • cr_assert_eq(add_arr<9>(arr2), 1 + (-2) + 3 + 4 + 5 + 6 + 7 + 8 + 9);
    • }