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#include <stdio.h>
mm4date2std(inputyear, inputmonth, inputday, inputhour, inputmin, inputsec,
std_ext, str)
int inputyear, inputmonth, inputday, inputhour, inputmin, inputsec;
char *std_ext;
char *str;
{
int year, month, day, hour, min, sec;
static int days_per_month[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
int days_per_year;
register int i, j, k, found;
year = inputyear;
month = inputmonth;
day = inputday;
hour = inputhour;
min = inputmin;
sec = inputsec;
/* From Kernighan & Ritchie, p. 37
"... a year is a leap year if it is divisible by 4 but not by 400,
except that years divisible by 400 ARE leap years."
*/
#define CHECK_LEAP_YEAR \
days_per_month[1] = 28; \
if ((!(year % 4)) && (year % 100)) /* leap year? */ \
days_per_month[1] = 29; \
if (!(year % 400)) \
days_per_month[1] = 29;
CHECK_LEAP_YEAR
while (hour >= 24) /* catch day rollover */
{
++day;
hour -= 24;
if (day >= days_per_month[month-1]) /* catch year rollover */
{
if (month < 12)
++month;
else
{
month = 1;
++year;
CHECK_LEAP_YEAR
}
day = 1;
}
}
sprintf(str, "%2d/%2d/%2d %2d:%02d:%02d %s",
month, day, year - 1900, hour, min, sec, std_ext);
}
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