Triple Ref Pointers – Computerphile

The ‘magic’ trick of pointers to pointers – Professor Brailsford explains how what might seem complicated will actually simplify your code. (See Extra Bits video for a code walkthrough)

The Professor’s Code: http://bit.ly/Computerphile_ProfBrails_TripleRef
EXTRA BITS – Triple Ref Code: https://youtu.be/1s0w_p5HEuY

n.b. Message from the Prof: Many thanks to all of you who have pointed out that I got over excited at the end of this video and (on the LEGO model) did the pointer reassignment in the wrong order. The correct way ( in the model once again) was to do the short pointer first and the longer pointer second – which I think is done correctly in the downloadable C program.

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This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: http://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran’s Numberphile. More at http://www.bradyharan.com