And use --C++ to get exactly C (this is a bad prefix/postfix joke.)
Not exactly. This way you will search for C-1, because increment is executed after value return.
You're right, though it already didn't exactly work anyhow since it'd need parenthesis to execute properly, like (--C)++. On a side note, --C would make for a cool assembly language name.
It helps if you select 'verbatim' instead of 'all results' (in google, click on 'tools'). This reduces how much interpretation google gives to your search keywords.