<C语言>“获取时间”函数的定义与封装

C语言获取本地时间，有时候需要不同的格式来表示，作者自己编写了一个头文件，封装了日期和时间，便于调用，在这里分享给大家：

/*  The function for geting date. */
/*
author:wsg
date:2017/09/08
version:1
*/

#ifndef _GETTM_H_
#define _GETTM_H_

/* head file */
#include <time.h>

/* macro */
#define SIZE 30

/* Declaration of function */
/* include:
struct tm *get_loc_time(void);

int get_loc_year(void);
int get_loc_mon(void);
int get_loc_mday(void);
char *get_loc_wday(void);
int get_loc_hour(void);
int get_loc_min(void);
int get_loc_sec(void);
void get_str_time(char buf[]);
*end here
*/

/* Function encapsulation */
struct tm *get_loc_time(void)
{
time_t t;
time(&t);

struct tm *loc_time;
loc_time = localtime(&t);

return loc_time;
}

/* get date：include year_mon_mday and wday and hour_min_sec */
//get date year
int get_loc_year(void)
{
struct tm *loc_time = get_loc_time();
return ( (loc_time->tm_year)+1900 );
}

//get date mon
int get_loc_mon(void)
{
struct tm *loc_time = get_loc_time();
return ( (loc_time->tm_mon)+1 );
}

//get date mday
int get_loc_mday(void)
{
struct tm *loc_time = get_loc_time();
return ( (loc_time->tm_mday) );
}

//get date wday
char *get_loc_wday(void)
{
char *wday[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
struct tm *loc_time = get_loc_time();
return ( wday[(loc_time->tm_wday)] );
}

// get date hour
int get_loc_hour(void)
{
struct tm *loc_time = get_loc_time();
return ( (loc_time->tm_hour) );
}

// get date min
int get_loc_min(void)
{
struct tm *loc_time = get_loc_time();
return ( (loc_time->tm_min) );
}

// get date sec
int get_loc_sec(void)
{
struct tm *loc_time = get_loc_time();
return ( (loc_time->tm_sec) );
}

//change date to formate string
void get_str_time(char buf[])
{
int year, mon,
b6aa
mday, hour, min, sec;;
char *wday = NULL;

year = get_loc_year();
mon = get_loc_mon();
mday = get_loc_mday();

wday = get_loc_wday();

hour = get_loc_hour();
min = get_loc_min();
sec = get_loc_sec();

/* change any format to string */
snprintf(buf, SIZE, "%d/%02d/%02d %s %02d:%02d:%02d\n", year, mon, mday, wday, hour, min, sec);
}

#endif

test：

#include <stdio.h>
#include "gettm.h"

int main(void)
{
int year, mon, mday;
char *wday = NULL;
int hour, min, sec;

year = get_loc_year();
mon = get_loc_mon();
mday = get_loc_mday();

wday = get_loc_wday();

hour = get_loc_hour();
min = get_loc_min();
sec = get_loc_sec();

printf("%d/%02d/%02d ", year, mon, mday);
printf("%s ", wday);
printf("%02d:%02d:%02d\n", hour, min, sec);

char buf[SIZE] = {};
get_str_time(buf);
printf("%s", buf);

return 0;
}

You can see the result:

2017/09/08 Fri 11:02:34

2017/09/08 Fri 11:02:34

点此：C/C++关于日期和时间的函数大全