I've got some unvantable, but expectible problem... When I am entering numbers from keyboard, and display them on LCD, I get error like this:

I wanted to enter: 123.9881
but I've got: 123.988099

Software is in C, and looks like that:

float form_number(unsigned char new_number)
{
float whole_number;

if(point) // check if point is entered
{
count_f++;
Fractional = Fractional * 10 + new_number;
}
else integer_part = integer_part*10 + new_number;

whole_number = integer_part + Fractional/ (10^count_f);

return whole_number;
}

This is more algorithm, than my original function. I didn't post original because, it has a lot of unnececary things for the quastion I want to ask.

So, may be someone knows how to avoid this averanging error? Is it one posibility, simply to display separatly fractional part and integer, without this division: Fractional/ (10^count_f).

May be there are more ways???

Thanks in advance!