Binky Pointer Fun Video C++ (High Quality 640x560)

A fun 3 minute video that explains the basics features of pointers and memory in C++. Copyright Nick Parlante, 1999. These materials are free and available at http://cslibrary.stanford.edu/ For more information see:
http://www.netcore2k.net/articles/pointers

Category:

Science & Technology

Tags:

• programming
• pointer
• memory
• binky
• c++

[jony1710]

@jamesllewellyn19 ahh thanks man, that makes complete sense. happy 2012. :)

[jamesllewellyn19]

@jony1710 try "int *a, *b;" i think with "int* a,b;" you are only assigning a as a pointer and not b...

[jony1710]

can anybody think of a logical reason why i cant do "int* a,b;" and have them both be pointers?

[gsvick]

@zfjquery Except you don't set y to null, just x. And the condition tests whether y is null and only then tries to delete it, which doesn't make any sense.

So, your code as written actually works, but doesn't make any sense and will be “a big problem” when used in any program that has more than 10 lines of code.

[zfjquery]

@gsvick

if you delete any pointer twice you will get error . setting it to null is important after deleting so next time you can check before deleting the same pointer if null then dont delete.

[gsvick]

@zfjquery That doesn't work either.

[zfjquery]

at the end dnt do

delete x;

delete y; // this will be a big problem

so always do

delete x;

x = NULL;

if(!y) delete y;

[Ethaninja]

This is great, thanks' a bunch man ;)

[destructionman1]

yo des jambas b brash!

[stphnkng]

uhh, yeah sharing whatever...