日期模块的实现

#include "date.h" /* 判断是不是是闰年,函数放回为1表示是闰年，函数返回为0为非闰年 */ UINT32 Is_Leap_Year( UINT32 u32_year ) { UINT32 u32_Leap = 0u, u32_day = 0u; /* 能被4整除并且不能被100整除，或能被400 */ if (((0u == (u32_year % 4u)) && ((u32_year % 100u) != 0u)) || (( u32_year % 400u) == 0u)) { /* OSM_Printf是闰年 */ u32_Leap = 1u; u32_day = 366u; } else { /* 不是闰年 */ u32_Leap = 0u; u32_day = 365u; } return u32_Leap; } /* 2、输入1个日期如：20110415，判断是星期几 */ UINT32 Week( UINT32 year_u32, UINT32 mouth_u32, UINT32 day_u32 ) { UINT32 day_code = 0u; UINT32 i32i = 0u; UINT32 u32_j = 0u; UINT32 year_flag = 0u; UINT32 days = 0u; UINT32 i32_sum = 0u; UINT32 MOUTH[12] = {30u, 28u, 31u, 30u, 31u, 30u, 31u, 31u, 30u, 31u, 30u, 31u}; if ( (mouth_u32 < 1u) || (mouth_u32 > 12u) || (day_u32 > 31u) || (year_u32 < 1900u)) { (void)OSM_Printf("输入有误的数据"); } else { if ( 1900U == year_u32 ) { u32_j = (days + day_u32) % 7u; } else { for ( i32i = 1900u ; i32i < year_u32; i32i++) { year_flag = Is_Leap_Year(i32i); if ( 1u == year_flag) { days += 366u; } else { days += 365u; } } for ( i32i = 0u; i32i < (mouth_u32 - 1u); i32i++) { days += MOUTH[i32i]; } u32_j = (days + day_u32) % 7u; } switch(u32_j) { case 0u: (void)OSM_Printf("星期日 "); break; case 1u: (void)OSM_Printf("星期1 "); break; case 2u: (void)OSM_Printf("星期2 "); break; case 3u: (void)OSM_Printf("星期3 "); break; case 4u: (void)OSM_Printf("星期4 "); break; case 5u: (void)OSM_Printf("星期5 "); break; case 6u: (void)OSM_Printf("星期6 "); break; default: break; } } return 0u; } /* 3、两个指定的日期间相隔多少天，如：20110415距离19880906相隔多少天 */ /* 思路：分别求出两个日期距离1900年1月1日的天数，然后求出连个之间的差值 */ /* 求出1个日期1990年以后的包括1990年与1990年1月1日的距离 */ UINT32 Distance( UINT32 year_u32, UINT32 mouth_u32, UINT32 day_u32 ) { UINT32 distance_to_u32 = 0u; UINT32 i32i = 0u; UINT32 year_flag = 0u; UINT32 MOUTH[12] = {30u, 28u, 31u, 30u, 31u, 30u, 31u, 31u, 30u, 31u, 30u, 31u}; if ( (mouth_u32 < 1u) || (mouth_u32 > 12u) || (day_u32 > 31u) || (year_u32 < 1900u)) { (void)OSM_Printf("输入有误的数据"); } else { if ( 1900u == year_u32 ) { if ( 1u != mouth_u32 ) { for ( i32i = 0u; i32i < (mouth_u32 - 1u); i32i++) { distance_to_u32 += MOUTH[i32i]; } } distance_to_u32 += day_u32; } else { for ( i32i = 1900u ; i32i < year_u32; i32i++) { year_flag = Is_Leap_Year(i32i); if ( 1u == year_flag) { distance_to_u32 += 366u; } else { distance_to_u32 += 365u; } } for ( i32i = 0u; i32i < (mouth_u32 - 1u); i32i++) { distance_to_u32 += MOUTH[i32i]; } } } return distance_to_u32; } /* 求出两个日期之间的距离 */ UINT32 Absolue_distance( UINT32 year1_u32, UINT32 mouth1_u32, UINT32 day1_u32, UINT32 year2_u32, UINT32 mouth2_u32, UINT32 day2_u32 ) { UINT32 absolue_distance = 0u; UINT32 distance1 = 0u; UINT32 distance2 = 0u; distance1 = Distance(year1_u32, mouth1_u32, day1_u32); distance2 = Distance(year2_u32, mouth2_u32, day2_u32); if ( distance1 > distance2) { absolue_distance = distance1 - distance2; } else { absolue_distance = distance2 - distance1; } (void)OSM_Printf("%d",absolue_distance); return absolue_distance; } /* 4、实现日期的格式化输出方式如YYYYMMDD, YYMMDD */ UINT32 Formatout1( UINT32 year_u32, UINT32 mouth_u32, UINT32 day_u32 ) { if((NULL != year_u32) || (NULL != mouth_u32) || (NULL != day_u32)) { (void)OSM_Printf("YYYYMMDD的情势:%04d%02d%02d ",year_u32,mouth_u32,day_u32); (void)OSM_Printf("YYMMDD的情势:%02d%02d%02d ",(year_u32 % 100U),mouth_u32,day_u32); } else { (void)OSM_Printf("输入有误"); } return 0u; }

#include "date.h" UINT32 main(void) { UINT32 u32_year1 = 0u; UINT32 u32_year2 = 0u; UINT32 u32_mouth1 = 0u; UINT32 u32_mouth2 = 0u; UINT32 u32_day1 = 0u; UINT32 u32_day2 = 0u; UINT32 flag = 0u; UINT32 distance_abs = 0u; UINT32 key = 0u; (void)OSM_Printf("~~~~~~~~~~~~~~~~~~实战4~~~~~~~~~~~~~~~~~~~~~ "); (void)OSM_Printf("~~~~~~~~~~~~~~~~~功能菜单~~~~~~~~~~~~~~~~~~~~ "); (void)OSM_Printf("~~~~~~~~~~~~~~~~~功能菜单~~~~~~~~~~~~~~~~~~~~ "); (void)OSM_Printf("~~~~~~~~~~~~~~~~~1、闰年判断~~~~~~~~~~~~~~~~~ "); (void)OSM_Printf("~~~~~~~~~~~~~~~~~2、星期判断~~~~~~~~~~~~~~~~~ "); (void)OSM_Printf("~~~~~~~~~~~~~~~~~3、日期间隔~~~~~~~~~~~~~~~~~ "); (void)OSM_Printf("~~~~~~~~~~~~~~~~~4、格式输出~~~~~~~~~~~~~~~~~ "); (void)OSM_Printf("~~~~~~~~~~~~~~~~~输入相应的数字~~~~~~~~~~~~~~ "); (void)OSM_Scanf("%d", &key); if ( key < 1 || key > 4) { (void)OSM_Printf("输入毛病了！"); } switch (key) { case 1u: (void)OSM_Printf("输入年份 "); (void)OSM_Scanf("%d", &u32_year1); flag = Is_Leap_Year(u32_year1); if ( 1u == flag) { (void)OSM_Printf("是闰年 "); } if ( 0u == flag) { (void)OSM_Printf("不是闰年 "); } break; case 2u: (void)OSM_Printf("请输入年月日: "); (void)OSM_Scanf("%4d%2d%2d",&u32_year1, &u32_mouth1, &u32_day1); (void)Week(u32_year1, u32_mouth1, u32_day1); break; case 3u: (void)OSM_Printf("请输入第1个日期: "); (void)OSM_Scanf("%4d%2d%2d",&u32_year1, &u32_mouth1, &u32_day1); (void)OSM_Printf("请输入第2个日期: "); (void)OSM_Scanf("%4d%2d%2d",&u32_year2, &u32_mouth2, &u32_day2); (void)Absolue_distance( u32_year1, u32_mouth1, u32_day1, u32_year2, u32_mouth2, u32_day2); break; case 4u: (void)OSM_Printf("请输入年月日: "); (void)OSM_Scanf("%4d%2d%2d",&u32_year1, &u32_mouth1, &u32_day1); (void)Formatout1(u32_year1, u32_mouth1, u32_day1); break; default: break; } return 0u; }