What is #13#10 in Pascal?

[avv210]

Hi guys! What is the meaning of #13#10 in Pascal? Thank you.

[Dodo1977]

#13#10 indicates a return and linefeed. In other words, it starts a new line.

[Zoran]

In Free Pascal code, the hash character in front of unsigned byte number - #n - is a character literal, where n represents ascii value of that character.
So, writting #65 in pascal source is same as 'A'.
You can also use this syntax inside string constants, for example:

Code: Pascal  [Select][+][-]

1. // All these constants are same:
2. const
3.   HW1 = 'Hello, World!';
4.   HW2 = 'Hello, W'#111#114'ld!';
5.   HW3 = 'Hello, W' + #111#114 + 'ld!';
6.   HW4 = 'Hello, W' + Chr(111) + Chr(114) + 'ld!';
7.  

And 13 and 10 are ASCII codes of "carridge return" and "line feed". Historically, there has been a lot of confusion about their usage (read more in Wikipedia).

For better portability of your programs, better use LineEnding constant, which will be #10 in Linux and #13#10 in Windows.

[zoltanleo]

Hi guys! What is the meaning of #13#10 in Pascal? Thank you.

#13#10(win) = #10(Linux) = #13(MacOS)  = sLineBreak

[Thaddy]

It is the same as ^M^J , which is the old way.  Indeed, use the sLineBreak for platform compatibility.