In C++, the definition of NULL is 0, so there is only an aesthetic difference. I prefer to avoid macros, so I use 0. Another problem with NULL is that people sometimes mistakenly believe that it is different from 0 and/or not an integer. In pre-standard code, NULL was/is sometimes defined to something unsuitable and therefore had/has to be avoided. That's less common these days.

Just because it is possible to push twigs along the ground with one’s nose does not necessarily mean that that is the best way to collect firewood.

I hate VB.NET’s continuous bloody interference. I HADN’T FINISHED TYPING YET YOU STUPID COMPILER! CAN’T YOU SEE THAT? DOES IT LOOK TO YOU LIKE I’M DONE TYPING? DID IT NOT OCCUR TO YOU THAT THE REASON YOU’VE FOUND ALL THOSE ERRORS IS BECAUSE I’M NOT FINISHED YET?!! I’LL TELL YOU WHEN I WANT YOU TO CHECK MY WORK, AND NOT BEFORE!

-- Ian Griffiths