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C语言获取编译日期时间和系统时间

C语言获取编译日期时间和系统时间

int GetCompileDateTime(char *szDateTime)

{
const intMONTH_PER_YEAR=12;
const char szEnglishMonth[MONTH_PER_YEAR][4]={ "Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
char szTmpDate[40]={0};
char szTmpTime[20]={0};
char szMonth[4]={0};
int iYear,iMonth,iDay,iHour,iMin,iSec;//,,

//获取编译日期、时间
sprintf(szTmpDate,"%s",__DATE__); //"Sep 18 2010"
sprintf(szTmpTime,"%s",__TIME__);//"10:59:19"

sscanf(szTmpDate,"%s %d %d",szMonth,&iDay,&iYear);
sscanf(szTmpTime,"%d:%d:%d",&iHour,&iMin,&iSec);

for(int i=0;MONTH_PER_YEAR;i++)
{
if(strncmp(szMonth,szEnglishMonth[i],3)==0)
{
iMonth=i+1;
break;
}
}

printf("%d,%d,%d,%d,%d,%d",iYear,iMonth,iDay,iHour,iMin,iSec);
sprintf(szDateTime,"dddddd",iYear,iMonth,iDay,iHour,iMin,iSec);
return 0;
}

typedefstruct
{
unsignedintYear;
unsignedintMonth;
unsignedintDate;
unsignedintHours;
unsignedintMinutes;
unsignedintSeconds;
}BuildDateTime;

constunsignedcharMonthStr[12][4]={"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};

voidGetBuildDateTime(BuildDateTime*p_BuildDateTime)
{
unsignedchartemp_str[4]={0,0,0,0},i=0;

sscanf(__DATE__,"%s - M",temp_str,&(p_BuildDateTime->Date),&(p_BuildDateTime->Year));
sscanf(__TIME__,"-:-:-",&(p_BuildDateTime->Hours),&(p_BuildDateTime->Minutes),&(p_BuildDateTime->Seconds));
for(i=0;iMonth=i+1;
break;
}
}
}

使用方法示例:

BuildDateTimeMyBuildDateTime;


GetBuildDateTime(&MyBuildDateTime);


RTC_YEAR=MyBuildDateTime.Year;
RTC_MONTH=MyBuildDateTime.Month;
RTC_DATE=MyBuildDateTime.Date;
RTC_HOURS=MyBuildDateTime.Hours;
RTC_MINUTES=MyBuildDateTime.Minutes;
RTC_SECONDS=MyBuildDateTime.Seconds;

__LINE__ 当前语句所在的行号, 以10进制整数标注.
__FILE__ 当前源文件的文件名, 以字符串常量标注.
__DATE__ 程序被编译的日期, 以"Mmm dd yyyy"格式的字符串标注.
__TIME__ 程序被编译的时间, 以"hh:mm:ss"格式的字符串标注, 该时间由asctime返回.

__STDC__ 如果当前编译器符合ISO标准, 那么该宏的值为1
__STDC_VERSION__ 如果当前编译器符合C89, 那么它被定义为199409L, 如果符合C99, 那么被定义为199901L.

__STDC_HOSTED__ 如果当前系统是"本地系统(hosted)", 那么它被定义为1. 本地系统表示当前系统拥有完整的标准C库.

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