#define _CRT_SECURE_NO_WARNINGS //VS中必須定義,否則報錯
#include<ctime>
#include<stdio.h>
int main()
{
	time_t nowtime;
	time(&nowtime); //獲取1900年1月1日0點(diǎn)0分0秒到現(xiàn)在經(jīng)過的秒數(shù)
	tm* p = localtime(&nowtime); //將秒數(shù)轉(zhuǎn)換為本地時間,年從1900算起,需要+1900,月為0-11,所以要+1
	printf("%04d:%02d:%02d %02d:%02d:%02d\n", p->tm_year + 1900, p->tm_mon + 1, p->tm_mday,p->tm_hour,p->tm_min,p->tm_sec);
}

#include<ctime>
#include<stdio.h>
int main()
{
	time_t nowtime;
	time(&nowtime); //獲取1900年1月1日0點(diǎn)0分0秒到現(xiàn)在經(jīng)過的秒數(shù)
	tm p;
	localtime_s(&p,&nowtime); //將秒數(shù)轉(zhuǎn)換為本地時間,年從1900算起,需要+1900,月為0-11,所以要+1
	printf("%04d:%02d:%02d %02d:%02d:%02d\n", p.tm_year + 1900, p.tm_mon + 1, p.tm_mday,p.tm_hour,p.tm_min,p.tm_sec);
}

#include<atltime.h>
#include<stdio.h>
int main()
{
	CTime time=CTime::GetCurrentTime();
	printf("%04d/%02d/%02d %02d:%02d:%02d\n",time.GetYear(),time.GetMonth(),time.GetDay(),time.GetHour(),time.GetMinute(),time.GetSecond());
}

#include<Windows.h>
#include<stdio.h>
int main()
{
	SYSTEMTIME time;
	GetLocalTime(&time);
	printf("%04d/%02d/%02d %02d:%02d:%02d\n", time.wYear, time.wMonth, time.wDay, time.wHour, time.wMinute, time.wSecond);
}

time_t time(
time_t* _Time //保存時間的參數(shù)
)

#define long long time_t

tm* localtime(
time_t* _Time 
)

#define _CRT_SECURE_NO_WARNINGS

struct tm
{
    int tm_sec;   // seconds after the minute - [0, 60] including leap second //一分鐘的第幾秒,從0開始計數(shù)
    int tm_min;   // minutes after the hour - [0, 59] //一小時的第幾分種,從0開始計數(shù)
    int tm_hour;  // hours since midnight - [0, 23] //一天的第幾個小時,從0開始計數(shù)
    int tm_mday;  // day of the month - [1, 31] //一個月的第幾天,從1開始計數(shù)
    int tm_mon;   // months since January - [0, 11] //一年的第幾個月,從0開始計數(shù),即0代表1月,1代表2月
    int tm_year;  // years since 1900 //從1900年到現(xiàn)在經(jīng)過的年分
    int tm_wday;  // days since Sunday - [0, 6] //一個星期的第幾天,從0開始計數(shù),即0代表星期一,依次類推
    int tm_yday;  // days since January 1 - [0, 365] //一年的第幾天,從0計數(shù),0代表第一天,依次類推
    int tm_isdst; // daylight savings time flag //夏令時標(biāo)志
};

errno_t localtime_s(
tm*  _Tm,
time_t * _Time
)

VOID WINAPI GetLocalTime(
LPSYSTEMTIME lpSystemTime
);

typedef struct _SYSTEMTIME {
  WORD wYear; //年
  WORD wMonth; //月
  WORD wDayOfWeek; //一周的第幾天,0為周日,1為周一
  WORD wDay;  //日 
  WORD wHour; //時
  WORD wMinute; //分
  WORD wSecond; //秒
  WORD wMilliseconds; //毫秒
} SYSTEMTIME, *PSYSTEMTIME, *LPSYSTEMTIME;