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1、 C实例编程(用C语言编写的一个日历文件)#include#include#include#includetypedef strUCtunsigned char day;unsigned char month;unsigned short year;T_MFW_DATE;typedef structT_MFW_DATE date; /*记录的日期*/t_cldrecord;typedef structT_MFW_DATE today_date; /*在程序中没有作用*/T_MFW_DATE cursor_date;int days_map67; /*日期地图*/t_cldmain_data;t
2、_cldmain_data *cldmain_data;void cldmain_get_days_map(void);void main(void)int i,j;cldmain_data = (t_cldmain_data*)malloc(sizeof(t_cldmain_data);cldmain_data-cursor_date.day = 20;while(1)char buf20;char *p;memset(buf,0,20);printf(“year month:“);gets(buf);if(buf0 = ”q”)break;cldmain_data-cursor_date.
3、year = strtod(buf,p +;cldmain_data-cursor_date.month = strtod(p,printf(“year %d month %d “,(cldmain_data-cursor_date.year),(cldmain_data-cursor_date.month);cldmain_get_days_map();printf(“ mo tu w th fr sa su “);for(j = 0; j days_mapji);printf(“ “);/getchar();/*检查日期是否合法合法返回1，考试.大提示否则返回0*/int check_da
4、te(T_MFW_DATE date)char month_days = ;/*大于2022年，小于2100年,月份合法*/if(date.year = 2100 date.month 12)return 0;/*day合法*/if(date.day month_daysdate.month - 1)return 0;if(date.month = 2)if(date.year % 4 != 0)if(date.day = 29)return 0;return 1;/*功能：得到每个月第一天是星期几星期 一 二 三 四 五 六 日返回值：1 2 3 4 5 6 7假如返回为0，则出错*/int
5、 get_weekday_of_month(T_MFW_DATE cursor_date)int day;/*参照1997年1月1日,参数cursor_date从2022年1月1日到2099年1月1日*/char month_days = 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31;int this_year_days = 0, 31, 59, 90, 120, 151,181, 212, 243, 273, 304, 334;int cursor_year_days = this_year_dayscursor_date.month - 1
6、+ (cursor_date.day = 1);int comp_days = (cursor_date.year - 1997)*365 + cursor_year_days;int i = (cursor_date.year - 1997)/4;comp_days = comp_days + i * 1;if(cursor_date.month 2)if( cursor_date.year % 4 = 0 )comp_days += 1;if(cursor_date.day 2098)return 0;day = comp_days % 7;/*1997年1月1日是星期三*/day = (
7、day + 2) % 7;if(day = 0)day = 7;return day;/*依据参数的值,得到该年该月有多少天.返回值:该月的天数*/int count_days_of_month(T_MFW_DATE cursor_date)char month_days = ;unsigned char day = cldmain_data-cursor_date.day;unsigned char month = cldmain_data-cursor_date.month;unsigned short year = cldmain_data-cursor_date.year;if(mon
8、th != 2)return month_daysmonth -1;elseif(year%4 != 0)return 28;if(year%4 = 0)if(year%100 = 0)if(year %400 = 0)return 29;return 28;return 29;/*得到日期地图,保存到全局构造变量cldmain_data的成员数组变量days_map中.*/void cldmain_get_days_map(void)int i;int day;T_MFW_DATE cursor_date = cldmain_data-cursor_date;int *map_p = cldmain_data-days_map0;int days_count;int weekday;for(i = 0; i cursor_date) = 0)return;days_count = count_days_of_month(cldmain_data-cursor_date);weekday = get_weekday_of_month(cldmain_data-cursor_date);day = 1;for(i = weekday-1; i days_count + weekday - 1; i+)map_pi = day;day +;
