计算星期几的C代码

SuperStar515

计算星期几的C代码 [复制链接]

计算星期几的C代码

计算星期几的C代码

1. static UCHAR ClkDay; /* Counters for local
2. DATE */
3. static UCHAR ClkDOW; /* Day of week (0 is
4. Sunday) */
5. static UCHAR ClkMonth;
6. static UINT ClkYear;
10. typedef struct clk_month
11. {
12. UCHAR MonthDays; /* Number of days in each
13. month */
14. char *MonthName; /* Name of the
15. month */
16. UCHAR MonthVal; /* Value used to compute day of the
17. week */
18. } CLK_MONTH;
21. static CLK_MONTH code ClkMonthTbl[] = { /* MONTHS
22. TABLE */
23. {0, "", 0}, /* Invalid
24. month */
25. {31, "January ", 6}, /*
26. January */
27. {28, "February ", 2}, /* February (note leap years are handled
28. by code) */
29. {31, "March ", 2}, /*
30. March */
31. {30, "April ", 5}, /*
32. April */
33. {31, "May ", 0}, /*
34. May */
35. {30, "June ", 3}, /*
36. June */
37. {31, "July ", 5}, /*
38. July */
39. {31, "August ", 1}, /*
40. August */
41. {30, "September ", 4}, /*
42. September */
43. {31, "October ", 6}, /*
44. October */
45. {30, "November ", 2}, /*
46. November */
47. {31, "December ", 4} /*
48. December */
49. };
54. /*
55. ********************************************************************************
56. *************************
57. * COMPUTE DAY-OF-WEEK
58. *
59. * Description : This function computes the day of the week (0 == Sunday) based
60. on the current month,
61. * day and year.
62. * Arguments : None.
63. * Returns : None.
64. * Notes : - This function updates ClkDOW.
65. * - This function is called by ClkUpdateDate().
66. ********************************************************************************
67. *************************
68. */
69. #if CLK_DATE_EN
70. static void ClkUpdateDOW (void)
71. {
72. UINT dow;
74. dow = ClkDay + ClkMonthTbl[ClkMonth].MonthVal;
75. if (ClkMonth < 3)
76. {
77. if (ClkIsLeapYear(ClkYear))
78. {
79. dow--;
80. }
81. }
82. dow += ClkYear + (ClkYear / 4);
83. dow += (ClkYear / 400) - (ClkYear / 100);
84. dow %= 7;
85. ClkDOW = dow;
86. }
87. #endif

复制代码

huchuan987

好, 虽然我不懂用C,但还是要支持楼主的精神~~~~

gyh02133

用不着那么复杂~~~~~~~~~~~~~~ 我