datetime.c

unix环境下c语言屏幕编程开发

/*
 *	日期和时间转换例程
 */

#include "../inc/screen.h"

struct	tm	*localtime();

void xdate(date0)
struct    date *date0;
{
     unsigned int   ymdx;

     ymdx = date0->ymd;
     date0->day = ymdx & 0x1f;
     date0->month = (ymdx >> 5) & 0xf;
     date0->year = ((ymdx >> 9) & 0x7f) + 1979 ;
}

void ydate(date0)
struct    date *date0;
{
     unsigned int   ymdx;

     ymdx = 0;
     ymdx = ymdx | (date0->day & 0x1f);
     ymdx = ymdx | ((date0->month << 5) & 0x1e0);
     ymdx = ymdx | (((date0->year - 1979 ) << 9) & 0xfe00);
     date0->ymd = ymdx;
}

/*
 *	用汉字显示星期几
 */
char *wtoday(today)
int	today;
{
	static	char	strx[3];

	switch(today)
	{
		case 1: sprintf(strx,"一"); break;
		case 2: sprintf(strx,"二"); break;
		case 3: sprintf(strx,"三"); break;
		case 4: sprintf(strx,"四"); break;
		case 5: sprintf(strx,"五"); break;
		case 6: sprintf(strx,"六"); break;
		case 7: sprintf(strx,"日"); break;
		default: sprintf(strx,"xx"); break;
	}
	return(strx);
}