!! operator in c
» >
»
» View previous topic :: View next topic  

Code:
fputc( '0' + !!(c&(1<<x)), fp1 )


What does !! do?
I know ! means not, so what does !! mean?
Need artwork for your project? I can help.
http://grandta5.deviantart.com/
It is just a unary NOT then a unary NOT again. Smile

This just makes sure it is either a 1 or 0, basically.

Hope this helps! Smile
As Mateo says, this will turn any nonzero value into 1 (true), and keep any zero value at zero. The first not (!) turns a nonzero value, positive or negative, into a 0, and a 0 to 1. The second not (!) reverses it.
Thanks!
Need artwork for your project? I can help.
http://grandta5.deviantart.com/
It's the cast-to-bool operator.
  
Register to Join the Conversation
Have your own thoughts to add to this or any other topic? Want to ask a question, offer a suggestion, share your own programs and projects, upload a file to the file archives, get help with calculator and computer programming, or simply chat with like-minded coders and tech and calculator enthusiasts via the site-wide AJAX SAX widget? Registration for a free Cemetech account only takes a minute.

» Go to Registration page
!! operator in c
»
» View previous topic :: View next topic  
Page 1 of 1
» All times are UTC - 5 Hours
 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

 

Advertisement