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Rooted by: Print all even numbers from the interval
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  • Code 
    #include <string>
using namespace std;
string even_numbers_from_interval(int a, int b) {
  string r;
  for (a % 2 ? ++a : a; a <= b; a += 2) r += to_string(a) + " ";
  if (r.size()) r.pop_back();
  return r;
}
     Test Cases 
    // TODO: Replace examples and use TDD by writing your own tests

Describe(any_group_name_you_want)
{
    It(should_do_something)
    {
        Assert::That(even_numbers_from_interval(2, 10), Equals("2 4 6 8 10"));
        Assert::That(even_numbers_from_interval(9, 14), Equals("10 12 14"));
    }
};
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  • Code
    • #include <string>
    • using namespace std;
    • string even_numbers_from_interval(int a, int b) {
    • //
    • string r;
    • for (a % 2 ? ++a : a; a <= b; a += 2) r += to_string(a) + " ";
    • if (r.size()) r.pop_back();
    • return r;
    • }