From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
	ip-172-31-65-14.ec2.internal
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=3.0 tests=BAYES_00,T_SCC_BODY_TEXT_LINE
	autolearn=ham autolearn_force=no version=3.4.6
Date: Sat, 19 Nov 2022 15:05:50 +0100
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.5.0
Newsgroups: comp.lang.ada
Content-Language: en-GB
From: ldries46 <bertus.dries@planet.nl>
Subject: Finding the next or the previous value in a enumerated type
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Message-ID: <nnd$1f48a501$398eed6c@11974fcc584b8061>
Organization: KPN B.V.
Path: eternal-september.org!reader01.eternal-september.org!feeder1.feed.usenet.farm!feed.usenet.farm!feeder.usenetexpress.com!tr1.eu1.usenetexpress.com!94.232.112.244.MISMATCH!feed.abavia.com!abe004.abavia.com!abp001.abavia.com!news.kpn.nl!not-for-mail
Injection-Date: Sat, 19 Nov 2022 15:05:51 +0100
Injection-Info: news.kpn.nl; mail-complaints-to="abuse@kpn.com"
Xref: reader01.eternal-september.org comp.lang.ada:64631
List-Id: <comp.lang.ada>

I do have a enumated type:
type VALUE is (ABC, DEF, GHI, JKL, MNOP);
  Suppose I have a parameter with the value DEF is there a simple way to 
get the next value like you can with integers in the way of V2 := V1 + 1 
for instance OUT := NEXT( ABC).