# [plt-scheme] Natural numbers

The term "natural number" is sometimes considered to start at 1,
sometimes 0. In computer science, 0 is often an important case for
the problems we solve, so we include 0 in our "natural numbers". If
you're used to natural numbers starting at 1, you could always
distinguish by saying "positive integers" or "non-negative integers"
so everyone knows whether you're starting at 0 or 1.
On Wed, Mar 11, 2009 at 7:19 PM, aditya shukla
<adityashukla1983 at gmail.com> wrote:
>* Can someone please explain why natural numbers in chapter 11 of htdp begin
*>* with 0 ?
*>*
*>* Aditya
*
--
Carl Eastlund