Linux 获取当前系统时间（year-month-day h:m:s weekday ）

#include <stdio.h>
#include <time.h>
#include <string.h>
int weekday(int w , char *buff)
{

switch(w)
{
case 0:
sprintf(buff , "%s" , "星期一");
break;
case 1:
sprintf(buff , "%s" , "星期二");
break;
case 2:
sprintf(buff , "%s" , "星期三");
break;
case 3:
sprintf(buff , "%s" , "星期四");
break;
case 4:
sprintf(buff , "%s" , "星期五");
break;
case 5:
sprintf(buff , "%s" , "星期六");
break;
case 6:
sprintf(buff , "%s" , "星期日");
break;
}
return 0;
}
/*
*get local time (year-month-day hour-min-sec weekday)
*
*/
int getCurTime(char *strTime , int type)
{
time_t t;
char buff[10];
struct tm *tm = NULL;
t = time(NULL);

if(t == -1)
{
return -1;
}
tm = localtime(&t);
weekday(tm->tm_wday , buff);
if(tm == NULL)
{
return -1;
}

if(type == 0)
{
sprintf(strTime , "%d年%d月%d日  %d:%d:%d   %s\n" , tm->tm_year + 1900 , tm->tm_mon +  1, tm->tm_mday , tm->tm_hour , tm->tm_min , tm->tm_sec , buff);
}
else if(type == 1 )
{
sprintf(strTime , "%d-%d-%d  %d:%d:%d   %s\n" , tm->tm_year + 1900 , tm->tm_mon +  1, tm->tm_mday , tm->tm_hour , tm->tm_min , tm->tm_sec, buff);
}
else if(type == 2)
{
sprintf(strTime , "%d_%d_%d  %d:%d:%d   %s\n" , tm->tm_year + 1900 , tm->tm_mon +  1, tm->tm_mday , tm->tm_hour , tm->tm_min , tm->tm_sec, buff);
}
return 0;
}
int main(int argc , char **argv)
{
char buff[60];
getCurTime(buff , 0);

printf("%s \n " , buff);
return 0;
}