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Rooted by: Add numbers of an array
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  • Code 
    long
add_arr(const unsigned long len, const int arr[len])
{
  long result = 0;
  
  for
  (
    unsigned long i = 0;
    i < len;
    result += arr[i++]
  );
  
  return result;
}
     Test Cases 
    #include<criterion/criterion.h>

long add_arr(const unsigned long len, const int[len]);

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);
}
    View Run Output
  • Code
    • function addArr(arr){
    • long
    • add_arr(const unsigned long len, const int arr[len])
    • {
    • long result = 0;
    • if(arr.length === 0) return null
    • for
    • (
    • unsigned long i = 0;
    • i < len;
    • result += arr[i++]
    • );
    • let final = 0
    • arr.forEach(num => {
    • final += num
    • })
    • return final
    • return result;
    • }
     Test Cases
    • #include<criterion/criterion.h>
    • const chai = require("chai");
    • const assert = chai.assert;
    • long add_arr(const unsigned long len, const int[len]);
    • describe("Solution", function() {
    • it("should test for something", function() {
    • assert.strictEqual(addArr([1, 2, 3, 4, 5]), 15);
    • assert.strictEqual(addArr([1, 100]), 101)
    • assert.strictEqual(addArr([]), null)
    • });
    • });
    • 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);
    • }