# Time Display strange issue

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#### pigman

##### New Member
Hey,
I'm messing with this function I found a while back to display milliseconds in a countdown timer and it does something strange when I feed it 6 hours it displays 00:12:14 instead of 06:00:00. Anyone have any ideas, I didn't write it I found it online.
Cheers

Here is the code.

Code:
void print_time(unsigned long t_milli)
{
char buffer[20];
int days, hours, mins, secs;
int fractime;
unsigned long inttime;

inttime  = t_milli / 1000;
fractime = t_milli % 1000;
// inttime is the total number of number of seconds
// fractimeis the number of thousandths of a second

// number of days is total number of seconds divided by 24 divided by 3600
days     = inttime / (24*3600);
inttime  = inttime % (24*3600);

// Now, inttime is the remainder after subtracting the number of seconds
// in the number of days
hours    = inttime / 3600;
inttime  = inttime % 3600;

// Now, inttime is the remainder after subtracting the number of seconds
// in the number of days and hours
mins     = inttime / 60;
inttime  = inttime % 60;

// Now inttime is the number of seconds left after subtracting the number
// in the number of days, hours and minutes. In other words, it is the
// number of seconds.
secs = inttime;

// Don't bother to print days
//sprintf(buffer, "%02d:%02d:%02d.%03d", hours, mins, secs, fractime);
sprintf(buffer, "%02d:%02d:%02d", hours, mins, secs);
lcd.print(buffer);
}

#### dougy83

##### Well-Known Member
print_time(1000 * 6 * 3600); displays 06:00:00 as expected...

EDIT: but as you're probably using Arduino, the standard 'int' is only 16 bits. Modify the lines for the hours to be
Code:
    // number of days is total number of seconds divided by 24 divided by 3600
days     = inttime / (24*3600ul);
inttime  = inttime % (24*3600ul);
It should be fine then. The problem was that 24*3600 is more than 16 bits.

Last edited:

#### pigman

##### New Member
AWESOME!

Thanks heaps mate that did the trick!

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