Editing Turbo Pascal (section)

== Syntax ==

* Pascal is not [[case-sensitive]].
* Historically, Pascal comments are enclosed <code>{ within pairs of braces }</code>, or <code>(* left parenthesis/asterisk and asterisk/right parenthesis pairs *)</code>, and these can span any number of lines. Later versions of Borland Pascal also supported C++-style comments <code>// preceded by two forward slashes </code>, which finish at the end of the line.
* The syntax for the statement <code>case</code> is more flexible than standard Pascal.
* Sets may only have up to 256 (2<sup>8</sup>) members.
* The standard Pascal <code>String</code> preceded by a length byte is supported, and takes a fixed amount of storage; later versions added a more flexible null-terminated type, calling the older type "short string". Older source code which handles strings in non-standard ways (e.g., directly manipulating the length byte like <code>S[0]:=14</code> to truncate a string) must either have its strings declared as short strings, or be rewritten.

This is the classic [["Hello, World!" program]] in Turbo Pascal:

<syntaxhighlight lang="Pascal">
program HelloWorld;
begin
  WriteLn('Hello World')
end.
</syntaxhighlight>

This asks for a name and writes it back to the screen a hundred times:

<syntaxhighlight lang="Pascal">
program WriteName;
var
  i    : Integer;        {variable to be used for looping}
  Name : String;         {declares the variable Name as a string}
begin
  Write('Please tell me your name: ');
  ReadLn(Name);          {ReadLn returns the string entered by the user}
  for i := 1 to 100 do
  begin
    WriteLn('Hello ', Name)
  end;
 readln;
end.
</syntaxhighlight>