fork(6) download
copy 
  1. //Taken from: http://p...content-available-to-author-only...e.org/349916#57,61,162,175
  2. //see also http://w...content-available-to-author-only...s.com/forums/showthread.php?t=38143
  3.  
  4. //
  5. // Copyright (c) Microsoft Corporation.  All rights reserved.
  6. //
  7. //
  8. // Use of this source code is subject to the terms of the Microsoft end-user
  9. // license agreement (EULA) under which you licensed this SOFTWARE PRODUCT.
  10. // If you did not accept the terms of the EULA, you are not authorized to use
  11. // this source code. For a copy of the EULA, please see the LICENSE.RTF on your
  12. // install media.
  13. //
  14. //------------------------------------------------------------------------------
  15. //
  16. //  Copyright (C) 2004-2007, Freescale Semiconductor, Inc. All Rights Reserved.
  17. //  THIS SOURCE CODE, AND ITS USE AND DISTRIBUTION, IS SUBJECT TO THE TERMS
  18. //  AND CONDITIONS OF THE APPLICABLE LICENSE AGREEMENT
  19. //
  20. //------------------------------------------------------------------------------
  21. //
  22. //  Module: rtc.c
  23. //
  24. //  PQOAL Real-time clock (RTC) routines for the MC13783 PMIC RTC.
  25. //
  26. //------------------------------------------------------------------------------
  27.  
  28.  
  29. #include <stdio.h>
  30.  
  31. // Global Variables
  32. //These macro define some default information of RTC
  33. #define ORIGINYEAR       1980                  // the begin year
  34. #define MAXYEAR          (ORIGINYEAR + 100)    // the maxium year
  35. #define JAN1WEEK         2                     // Jan 1 1980 is a Tuesday
  36. #define GetDayOfWeek(X) (((X-1)+JAN1WEEK)%7)
  37.  
  38. #define UINT8 unsigned char
  39.  
  40. static const UINT8 monthtable[12] 
  41.   = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
  42. static const UINT8 monthtable_leap[12] 
  43.   = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
  44.  
  45.  
  46.  
  47. //------------------------------------------------------------------------------
  48. //
  49. // Function: IsLeapYear
  50. //
  51. // Local helper function checks if the year is a leap year
  52. //
  53. // Parameters:
  54. //
  55. // Returns:
  56. //      
  57. //
  58. //------------------------------------------------------------------------------
  59. static int IsLeapYear(int Year)
  60. {
  61.     int Leap;
  62.  
  63.     Leap = 0;
  64.     if ((Year % 4) == 0) {
  65.         Leap = 1;
  66.         if ((Year % 100) == 0) {
  67.             Leap = (Year%400) ? 0 : 1;
  68.         }
  69.     }
  70.  
  71.     return (Leap);
  72. }
  73.  
  74.  
  75. int main(void) {
  76.  
  77. 	int days;
  78.  
  79. 	scanf("%d",&days);
  80.  
  81. 	/*
  82. Фрагмент кода для разбора даты:
  83. вход: days - количество прошедших дней, 
  84.        начиная с 1 января 1980
  85. на выходе: year - год
  86.            month - месяц       
  87.            days - день
  88.     */
  89.  
  90.  
  91.     //taken from: BOOL ConvertDays(UINT32 days, SYSTEMTIME* lpTime)	
  92. //******************************************************************************
  93. 	int dayofweek, month, year;
  94.     UINT8 *month_tab;
  95.  
  96.     //Calculate current day of the week
  97.     dayofweek = GetDayOfWeek(days);
  98.  
  99.     year = ORIGINYEAR;
  100.  
  101.     while (days > 365)
  102.     {
  103.         if (IsLeapYear(year))
  104.         {
  105.             if (days > 366)
  106.             {
  107.                 days -= 366;
  108.                 year += 1;
  109.             }
  110.         }
  111.         else
  112.         {
  113.             days -= 365;
  114.             year += 1;
  115.         }
  116.     }
  117.  
  118.  
  119.     // Determine whether it is a leap year
  120.     month_tab = (UINT8 *)((IsLeapYear(year))? monthtable_leap : monthtable);
  121.  
  122.     for (month=0; month<12; month++)
  123.     {
  124.         if (days <= month_tab[month])
  125.             break;
  126.         days -= month_tab[month];
  127.     }
  128.  
  129.     month += 1;
  130. //******************************************************************************    
  131.  
  132.     printf("Date is %2d:%2d:%4d\n",days,month,year);
  133.  
  134.     printf("Day of week: %d\n",dayofweek);
  135.  
  136. 	return 0;
  137. }
  138.  
Success #stdin #stdout 0s 2056KB
comments (?)
stdin
copy 
367
stdout
copy 
Date is  1: 1:1981
Day of week: 4
https://ideone.com/PAlFc9
Microsoft code from Zune firmware
language:
C99 (gcc 8.3)
created:
8 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!