/in/foo.cc:21:1: error: expected unqualified-id before '{' token
   21 | {
      | ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:64:9: error: 'init' was not declared in this scope; did you mean 'int'?
   64 |         init(k);
      |         ^~~~
      |         int