Converts time in milliseconds to text format hours:minutes:seconds.

void MakeHMStime( char *str, clock_t _time )
{
	if( _time <= 0 ) _time = 0;
	float sec,min,ss,Smin,hod;
	ss = _time/1000;
	Smin = floor(ss/60);
	sec = floor(ss-Smin*60);
	min = floor((ss-floor(Smin/60)*3600)/60);
	if( Smin >= 60 )
	{
		hod = Smin/60;
		sprintf(str, "%d:%02d", (int)hod, (int)min);
			
	}else{
		sprintf(str, "%02d:%02d", (int)min, (int)sec);
	}
}