Question

Simple question I think, I am a little unsure as to why

decimal currentPercentage = 0;

currentPercentage = currentPercentage*((decimal)1 / (decimal)daysPerYear--);//or
currentPercentage *= ((decimal)1 / (decimal)daysPerYear--);

Will return 0 everytime but

(decimal)1 / (decimal)daysPerYear--;

will return the decimal I am after. What am I missing here?

Answer 1

You’re multiplying by 0.

currentPercentage is 0 before computing:

currentPercentage = currentPercentage*((decimal)1 / (decimal)daysPerYear--);

So you have in fact:

currentPercentage = 0 * ((decimal)1 / (decimal)daysPerYear--);

This expression is 0 no matter what ((decimal)1 / (decimal)daysPerYear--) is 🙂