Basic Pascal Tutorial/Hello, World: what changed

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Title: Basic Pascal Tutorial/Hello, World

New		Line
1	+	Hello, World (author: Tao Yue, state: unchanged)
2	+
3	+	In the short history of computer programming, one enduring tradition is that the first program in a new language is a "Hello, world" to the screen. So let's do that. Copy and paste the program below into your IDE or text editor, then compile and run it.
4	+
5	+	If you have no idea how to do this, return to the Table of Contents. Earlier lessons explain what a compiler is, give links to downloadable compilers, and walk you through the installation of an open-source Pascal compiler on Windows.
6	+
7	+	``` pascal
8	+	program Hello;
9	+	begin
10	+	writeln ('Hello, world.');
11	+	end.
12	+	```
13	+
14	+	The output on your screen should look like:
15	+
16	+	`Hello, world.`
17	+
18	+	If you're running the program in an IDE, you may see the program run in a flash, then return to the IDE before you can see what happened. See the bottom of the previous lesson for the reason why. One suggested solution, adding a readln to wait for you to press Enter before ending the program, would alter the "Hello, world" program to become:
19	+
20	+	``` pascal
21	+	program Hello;
22	+	begin
23	+	writeln ('Hello, world.');
24	+	readln;
25	+	end.
26	+	```
27	+
28	+	---
29	+	From the Free Pascal wiki, page "Basic Pascal Tutorial/Hello, World", 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](/wiki-contact).