Re: Random Statement

[rubywand@aol.com]

In article <01bbde4f$4210cac0$LocalHost@Administrator>, "Diego P. Vasquez
B." <dvasquez@datasrv.com> writes:

>
>Please clarify... I think that maybe I could help, but I did'n quite
>understand your message. Maybe the full code to be tried will do.
>C'YA!
>
>tbird@skyenet.net wrote in article <57lu0m$3po@news.skyenet.net>...
>> I use this, why won't it work...???
>> 
>> 10 let a = Rnd(1)*170
>> 20 if a <20 then goto (somewhere)
>> 30 if a >150 then goto (somewhere else)
>> 
>> howcome sometimes in the middle of the program the number from the
random
>
>> statement is under 20 and over 150.  A rnd(20)*150 isn't correct... 
I'm 
>> stuck,please help...?
>> 
>
>

     The confusing thing about this question is the code in Lines 20 and
30. If you want A to be in the range 20-150, why would Lines 20 and 30
send you anywhere but Line 10 (i.e. to try for another number that fits)?

     This thread got deleted after Nathan's response; so, this may be a
repeat: 

10 A= 20 + INT( RND(1) * 131)

will give nice clean integers, like 33, 87, 121, ..., with a minimum
possible value of 20 and a maximum possible value of 150.

     If you want the random numbers between 20 and 150 to, possibly, have
fractional parts, then

10 A= 20 + RND(1) * 130.1: IF A>150 then A= 150

will give the numbers, like 33, 87.557, 121.2, ...,  with a minimum
possible value of 20 and a maximum possible value of 150.
 
     Lines 20 and 30 can be deleted since A will never be less than 20 or
greater than 150. (By the way, it is best to stick with the Applesoft
BASIC convention of using upper-case everywhere except in text you want to
display in lower-case.)

Rubywand