foo.cc: In function ‘int isPrime(int)’:
foo.cc:32:2: error: expected ‘while’ at end of input
   32 | }
      |  ^
foo.cc:32:2: error: expected ‘(’ at end of input
   32 | }
      |  ^
      |  (
foo.cc:32:2: error: expected primary-expression at end of input
foo.cc:32:2: error: expected ‘)’ at end of input
   32 | }
      |  ^
      |  )
foo.cc:32:2: error: expected ‘;’ at end of input
   32 | }
      |  ^
      |  ;
foo.cc:32:2: error: expected ‘}’ at end of input
foo.cc:17:1: note: to match this ‘{’
   17 | {
      | ^