Dennis Ritchie who co-created C and UNIX and all the software systems we know now is dead at the age of 70 after battling an unknown illness for long.
The news was reported by Rob Pike a Google engineer and Former colleague of Dennis Ritchie via Google+.
Pike writes : He was a quiet and mostly private man, but he was also my friend, colleague, and collaborator, and the world has lost a truly great mind
Dennis Ritchie's profile page in Bell labs: http://cm.bell-labs.com/who/dmr/
For more on Dennis Ritchie :http://en.wikipedia.org/wiki/Dennis_Ritchie