您的位置:首页> 电脑专栏>内容正文
计算星期几的C代码
[正文]:计算星期几的c代码static uchar clkday; /* counters for local date */static uchar clkdow; /* day of week (0 is sunday) */static uchar clkmonth;static uint clkyear;typedef struct clk_month 123; uchar monthdays; /* number of days in each month */ char *monthname; /* name of the month */ uchar monthval; /* value used to compute day of the week */125; clk_month;static clk_month code clkmonthtbl[] = 123; /* months table */ 123;0, "", 0125;, /* invalid month */ 123;31, "january ", 6125;, /* january */ 123;28, "february ", 2125;, /* february (note leap years are handled by code) */ 123;31, "march ", 2125;, /* march */ 123;30, "april ", 5125;, /* april */ 123;31, "may ", 0125;, /* may */ 123;30, "june ", 3125;, /* june */ 123;31, "july ", 5125;, /* july */ 123;31, "august ", 1125;, /* august */ 123;30, "september ", 4125;, /* september */ 123;31, "october ", 6125;, /* october */ 123;30, "november ", 2125;, /* november */ 123;31, "december ", 4125; /* december */125;;/*********************************************************************************************************** compute day-of-week** description : this function computes the day of the week (0 == sunday) based on the current month,* day and year.* arguments : none.* returns : none.* notes : - this function updates clkdow.* - this function is called by clkupdatedate().**********************************************************************************************************/#if clk_date_enstatic void clkupdatedow (void)123; uint dow; dow = clkday + clkmonthtbl[clkmonth].monthval; if (clkmonth < 3) 123; if (clkisleapyear(clkyear)) 123; dow--; 125; 125; dow += clkyear + (clkyear / 4); dow += (clkyear / 400) - (clkyear / 100); dow %= 7; clkdow = dow;125;
网站首页 培训课程 维修指南
技术文章 家电专栏 供应信息
求购信息 培训资讯 展会信息
电脑专栏 教程下载 资料下载
常用软件 PLC教程 PLC资料
变频伺服 低压电器 维修资料
人机界面 自控仪表 工控机类
文章标题:
中国工控资源网手机版 2012
电话：010-67577139 13811659603
培训咨询QQ：657167934 471895637 销售咨询QQ：623769457
联系邮箱：zggkzyw@163.com
京ICP备11002135号
报时(2026-04-05 00:20:46)