This is a piece of code (I forget where I found it from) that I've been using as part of my count-down timer:if ( start == 1 ) { chrono = CLOCK_TOTAL_SECONDSvar.var_value.n ; chronoevent = CLOCK_TOTAL_SECONDSvar.var_value.n ; start = 2 ; } if ( start == 2 ) { chronotime = CLOCK_TOTAL_SECONDSvar.var_value.n - chrono ; } else { chronotime = 0 ; } if ( start == 2 ) { chronotimeevent = CLOCK_TOTAL_SECONDSvar.var_value.n - chronoevent ; } else { chronotimeevent = 0 ; } if ( chronotime < 0 ) { chronotime = chronotime + 86400 ; } if ( chronotimeevent < 0 ) { chronoevent = chronoevent + 86400 ; } if ( start == 2 ) { vr = ( chronotime - fmod(chronotime,60) ) / 60 ; } if ( start == 2 ) { eventtime = ( chronotimeevent - fmod(chronotimeevent,60) ) / 60 ; } vr = fmod(vr,60) ; eventtime = fmod(eventtime,60) ; My code for count down timer starts at 45 minutes.The trouble is that when the timer reaches 0 minutes, eventtime will sometimes bounce back up to some random number.It's hard to reproduce. Sometimes it happens. Sometimes it doesn't.Anyone have any ideas?Or does anyone have another count down timer in C that does the same job but which is simpler?Cheers,

This is a piece of code (I forget where I found it from) that I've been using as part of my count-down timer:if ( start == 1 ) { chrono = CLOCK_TOTAL_SECONDSvar.var_value.n ; chronoevent = CLOCK_TOTAL_SECONDSvar.var_value.n ; start = 2 ; } if ( start == 2 ) { chronotime = CLOCK_TOTAL_SECONDSvar.var_value.n - chrono ; } else { chronotime = 0 ; } if ( start == 2 ) { chronotimeevent = CLOCK_TOTAL_SECONDSvar.var_value.n - chronoevent ; } else { chronotimeevent = 0 ; } if ( chronotime < 0 ) { chronotime = chronotime + 86400 ; } if ( chronotimeevent < 0 ) { chronoevent = chronoevent + 86400 ; } if ( start == 2 ) { vr = ( chronotime - fmod(chronotime,60) ) / 60 ; } if ( start == 2 ) { eventtime = ( chronotimeevent - fmod(chronotimeevent,60) ) / 60 ; } vr = fmod(vr,60) ; eventtime = fmod(eventtime,60) ; My code for count down timer starts at 45 minutes.The trouble is that when the timer reaches 0 minutes, eventtime will sometimes bounce back up to some random number.It's hard to reproduce. Sometimes it happens. Sometimes it doesn't.Anyone have any ideas?Or does anyone have another count down timer in C that does the same job but which is simpler?Cheers,

What's the code that (1) sets the time (45 min) and (2) checks when that time's up

Try this snippet for a GP timer (no warranty and usual disclaimers!)

/* Definitions */ bool Running; bool TimeUp; long StartTime; long CurrentTime; long ElapsedTime; long LimitTime;  /* If timer not running start it  */ if (!Running)   {   ElapsedTime = 0;   StartTime = time(NULL);   Running = true;   TimeUp = false;   }  /* If timer running update it */ if (Running)   {   ElapsedTime = time(NULL) - StartTime;    // Check if time up   if (ElapsedTime >= LimitTime)	 { 	 TimeUp = true;	 Running = false;	 }   else	 TimeUp = false;   }

Set the required time in LimitTime in seconds, set Running = false, and then check TimeUp to see if it has elapsed. The timer is stopped when time's up so needs restarting.time(NULL) returns the elapsed time in seconds from 00:00:00 GMT, January 1, 1970 so there's no need to worry abiut day end. I imagine that FS time is derived from this.

Don't worry, I fixed it :( It was just a typo on my part (like usual :( )