Two Equal Signs in One Line?

Question

Could someone please explain what this does and how it is legal C code? I found this line in this code: http://code.google.com/p/compression-code/downloads/list, which is a

Answer 1

You can do this: http://en.wikibooks.org/wiki/C_Programming/Variables

Moreover,

[a int] = 0; is possible.

[a char] = 0; is possible too.

arcbit and arcchar equals 0.