Help w/ c++ assignment...

[GaganW18]

Below are some functions, I havent tested out all parts of my .cpp file yet but I am getting ready to do so.

I also have question about bool operator ==. The requirement is:
-The return value is true if s1 and s2 have the zero
length. Also, if the length is greater than zero, then s1 and
s2 must have the same length, the same mean, the same
minimum, the same maximum, and the same sum.

stats::statistician()
	{
		reset(); //call reset func
	}
void stats::reset()
	{
		
		total = count = 0;
		tiniest = DBL_MAX; //**this was an example, why is this set to DBL_MAX? 
		largest = DBL_MIN;
		
	}

I need some help in understanding what the bool operator== is suppose to do and in general what are operator+ or operator* used for?

Thanks!