How to write a file with CRLF line breaks in Objective-C?

Question

Hi,

I need to create and export an excel file in my iPhone app. Unfortunately, excel won't read it if the line encoding is LF (the unix default when I write the file) instead of CRLF (the Windows standard)...Is there any way to write a file using CRLF line breaks?

I can tell this is the issue as if I open the file in TextWrangler after outputting it, then change the line breaks to CRLF, excel opens it fine.

Thanks,

Toby

Answer 1

If you're using printf or fprintf in C you typically terminate lines like this:

printf( "this is a line of text.\n" );

The \n outputs a linefeed. You can output a carriage return with \r, so to get a CRLF, you just:

printf( "this is a CRLF terminated line.\r\n" );