HB> class ofLapTimerStr;
HB> class ifLapTimerStr;
[...]
HB> ofLapTimerStr& ofLapTimerStr::operator<<(LapTimer &l)
HB> {
HB>    (ofstream &)*this << l.MarkCount << l.Last_Lap << l.Prev_Lap <<
HB>                                l.Total_LapTime << l.Avg_Lap << l.Bes
HB>     return *this;
HB> }
After I added
#include 
typedef int Timer_t;
struct timer_base
{
	int MarkCount;
};
at the top and removed three "snip" lines, Borland C++  5.01  compiled
your code without issuing any error messages.
Thomas
---
 þ MM 1.0 #0113 þ Message entered on Cray Laptop.
---------------