Those languages which deal with memory addresses.

[brokenhut]

You know yo’ve been doing far too much C(++) when you see a menu that says

Choose a burger and a pint* for only £3.99

and all you can think about is “pointer to a pint”.

Comments

[codesamurai]

hehe, although it'd be a compile time error. for is a keyword.

[ex_robhu]

:-)

[zootm]

Doing any C++ is too much. But yeah, I hate that.

The most telling one I notice is that you know you've been coding in C-like languages too much when you start ending sentences with a semicolon instead of a full stop.