random number within a specified range?

Jarrett Billingsley jarrett.billingsley at gmail.com
Sun Oct 5 16:37:36 PDT 2008

On Sun, Oct 5, 2008 at 7:34 PM, Michael P. <baseball.mjp at gmail.com> wrote:
> Hi,
> How would I go about getting a random number that was in a specified range of 2 numbers?
> For example, getting a number inbetween 1000 and 2000.
> -Michael P.

lo + rand() % (hi - lo)

assuming you're using Phobos, where rand() returns a number in the
range [0, uint.max].

This will get you a number in the range [1000, 2000); that is, it will
be at least 1000 and at most 1999.  If you need 2000 to be one of the
numbers generated, use 2001 as the hi.

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