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  1. #include <stdio.h>
  2. #include <stdbool.h>
  3.  
  4. int ordinal_date(int day, int month, bool leap_year) {
  5.   static const int days_up_to_month[] = {
  6.     0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
  7.   return days_up_to_month[month - 1] + day
  8.          + ((leap_year && (month > 2)) ? 1 : 0);
  9. }
  10.  
  11.  
  12. #define check(expr) \
  13.   if(!(expr)) { \
  14.     printf("[FAILED] " #expr " in %s\n", __func__); \
  15.   }
  16.  
  17. void ordinal_date_in_january_should_be_day_number() {
  18.   check(ordinal_date( 1, 1, false) ==  1);
  19.   check(ordinal_date( 1, 1,  true) ==  1);
  20.   check(ordinal_date(11, 1, false) == 11);
  21.   check(ordinal_date(11, 1,  true) == 11);
  22. }
  23.  
  24.  
  25. void ordinal_date_in_february_should_be_day_number_plus_days_in_january() {
  26.   check(ordinal_date( 1, 2, false) == 32);
  27.   check(ordinal_date( 1, 2,  true) == 32);
  28.   check(ordinal_date(11, 2, false) == 42);
  29.   check(ordinal_date(11, 2,  true) == 42);
  30. }
  31.  
  32. void ordinal_date_should_match_known_values_for_non_leap_year_march_to_dezember() {
  33.   check(ordinal_date( 1,  3, false) == ( 59 + 1));
  34.   check(ordinal_date( 1,  4, false) == ( 90 + 1));
  35.   check(ordinal_date( 1,  5, false) == (120 + 1));
  36.   check(ordinal_date( 1,  6, false) == (151 + 1));
  37.   check(ordinal_date( 1,  7, false) == (181 + 1));
  38.   check(ordinal_date( 1,  8, false) == (212 + 1));
  39.   check(ordinal_date( 1,  9, false) == (243 + 1));
  40.   check(ordinal_date( 1, 10, false) == (273 + 1));
  41.   check(ordinal_date( 1, 11, false) == (304 + 1));
  42.   check(ordinal_date( 1, 12, false) == (334 + 1));
  43. }
  44.  
  45. void ordinal_date_should_match_known_values_for_leap_year_march_to_dezember() {
  46.   check(ordinal_date( 1,  3, true) == ( 60 + 1));
  47.   check(ordinal_date( 1,  4, true) == ( 91 + 1));
  48.   check(ordinal_date( 1,  5, true) == (121 + 1));
  49.   check(ordinal_date( 1,  6, true) == (152 + 1));
  50.   check(ordinal_date( 1,  7, true) == (182 + 1));
  51.   check(ordinal_date( 1,  8, true) == (213 + 1));
  52.   check(ordinal_date( 1,  9, true) == (244 + 1));
  53.   check(ordinal_date( 1, 10, true) == (274 + 1));
  54.   check(ordinal_date( 1, 11, true) == (305 + 1));
  55.   check(ordinal_date( 1, 12, true) == (335 + 1));
  56. }
  57.  
  58. int main(void) {
  59.   ordinal_date_in_january_should_be_day_number();
  60.   ordinal_date_in_february_should_be_day_number_plus_days_in_january();
  61.   ordinal_date_should_match_known_values_for_non_leap_year_march_to_dezember();
  62.   ordinal_date_should_match_known_values_for_leap_year_march_to_dezember();
  63. }
  64.  
Success #stdin #stdout 0s 9296KB
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https://ideone.com/5rwzrf
language:
C (gcc 8.3)
created:
6 years ago
visibility:
secret

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