fork(1) download
copy 
  1. #include <chrono>
  2. #include <iostream>
  3.  
  4. template<typename T>
  5. void print_time_diff(std::ostream& out, T prior, T latter)
  6. {
  7.     namespace sc = std::chrono;
  8.     auto diff = sc::duration_cast<sc::milliseconds>(latter - prior).count();
  9.     auto const msecs = diff % 1000;
  10.    	diff /= 1000;
  11.     auto const secs = diff % 60;
  12.     diff /= 60;
  13.     auto const mins = diff % 60;
  14.     diff /= 60;
  15.     auto const hours = diff % 24;
  16.     diff /= 24;
  17.     auto const days = diff;
  18.  
  19. 	bool printed_earlier = false;
  20. 	if (days >= 1) {
  21. 		printed_earlier = true;
  22.     	out << days << (1 != days ? " days" : " day") << ' ';
  23. 	}
  24. 	if (printed_earlier || hours >= 1) {
  25. 		printed_earlier = true;
  26.         out << hours << (1 != hours ? " hours" : " hour") << ' ';
  27. 	}
  28. 	if (printed_earlier || mins >= 1) {
  29. 		printed_earlier = true;
  30.         out << mins << (1 != mins ? " minutes" : " minute") << ' ';
  31. 	}
  32. 	if (printed_earlier || secs >= 1) {
  33. 		printed_earlier = true;
  34.         out << secs << (1 != secs ? " seconds" : " second") << ' ';
  35. 	}
  36. 	if (printed_earlier || msecs >= 1) {
  37. 		printed_earlier = true;
  38. 		out << msecs << (1 != msecs ? " milliseconds" : " millisecond");
  39. 	}
  40. }
  41.  
  42. int main()
  43. {
  44. 	namespace sc = std::chrono;
  45. 	using hours = sc::hours;
  46. 	using mins = sc::minutes;
  47. 	using secs = sc::seconds;
  48. 	using msecs = sc::milliseconds;
  49.  
  50. 	auto const prior = std::chrono::system_clock::now();
  51. 	auto const latter = prior + hours(24) + hours(4) + mins(3) + secs(45);
  52. 	print_time_diff(std::cout, prior, latter);
  53. 	std::cout << '\n';
  54. 	auto const latter2 = prior + mins(32) + secs(54) + msecs(345);
  55. 	print_time_diff(std::cout, prior, latter2);
  56. }
Success #stdin #stdout 0s 3340KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
1 day 4 hours 3 minutes 45 seconds 0 milliseconds
32 minutes 54 seconds 345 milliseconds
https://ideone.com/bBNHQp
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!