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Basic Pascal Tutorial/Chapter 3/WHILE..DO/ja

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While ... DO loops

3Db - WHILE..DO (著者: Tao Yue, 状態: 原文のまま修正なし)

プリテスト・ループは以下の形式をとる。

pascal
while ???????????? do
  ????????????;

ループはブール式が FALSE になるまで実行される。ループの中で用いられる変数の1つを変化させてブール式に影響を与えるようにしなくてはならない。さもないと無限ループという結果になってしまう。

pascal
a := 5;
while a < 6 do
  writeln (a);

変数の値を変化させることで、この状況を修正するとよい。

pascal
a := 5;
while a < 6 do
begin
  writeln (a);
  a := a + 1
end;

WHILE ... DO ループはプリテスト・ループと呼ばれる。条件がループが実行される前に調べられるからである。従って、条件が FALSE としてはじまってしまうと、ループはまったく実行されない。

以下も参照のこと

FOR ...DO loops

Repeat... Until loops

For... in loops

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From the Free Pascal wiki, page "Basic Pascal Tutorial/Chapter 3/WHILE..DO/ja", as it stood on 2022-08-20 after a change by Kai Burghardt, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's Licensing page. If you have concerns about this material, message the admin.

Revision 1, last changed by WikiArchive .

Edited on wiki.freepascal.org by 4 people, 2015–2022

From the official wiki's backup of 26 May 2024: who edited this page there, and when. Edits made there after that date were not recorded, and the earlier versions are not shown here; the main page says why.

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DerakunCreated page
Derakun
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TrevFixed syntax highlighting (minor)
Kai BurghardtKai Burghardt moved page WHILE..DO/ja to Basic Pascal Tutorial/Chapter 3/WHILE..DO/ja: tidy up main name space: create subpage hierarchy for basic Pascal tutorial [cf. [[Special: PermaLink/149778#Clut... (minor)
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