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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. #include <iostream>
  5.  
  6. int count_args() {
  7.     return 0;
  8. }
  9.  
  10. template<typename T, typename... Vs>
  11. int count_args(T _, Vs... vs) {
  12.   return 1+count_args(vs...);
  13. }
  14.  
  15. template<int N,typename... Vs>
  16. bool is_arg_divisible(Vs... vs) {
  17. 	return count_args(vs...) % N == 0;
  18. }
  19.  
  20. int main() {
  21.     std::cout << is_arg_divisible<3>()                    << std::endl;
  22.     std::cout << is_arg_divisible<3>(1)                   << std::endl;
  23.     std::cout << is_arg_divisible<3>(1, 2)                << std::endl;
  24.     std::cout << is_arg_divisible<3>(1, 2, 3)             << std::endl;
  25.     std::cout << is_arg_divisible<3>(1, 2, 3, 4)          << std::endl;
  26.     std::cout << is_arg_divisible<3>(1, 2, 3, 4, 5)       << std::endl;
  27.     std::cout << is_arg_divisible<3>(1, "", 3, '4', 5, 6) << std::endl;
  28. }
  29.  
Success #stdin #stdout 0s 3468KB
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https://ideone.com/kB3CXv
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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