every object of the same class can equally gets access to the static variable
float has limited precision, eg, float x = 1.0;
but x = 0.99999987 things like this.
destroy precision of demicals when add huge numbers to small numbers
set precision(20)
10M + PI
1M + PI
length of decimal part is nonlinear....???
there's no way of knowing in the function what's the size of the array you are passing.
and you can read any memory you want and this is dangerous
just make it a rule, never ever create a pointer without initialization.
if a nullptr is used without further declaration, compiler would show you a "segmentation error"
custom objects have variables in memeory stored together, but some padding may be inserted.