foo.cc: In function ‘int main()’:
foo.cc:28:18: error: expected ‘}’ at end of input
   28 |                 }
      |                  ^
foo.cc:15:9: note: to match this ‘{’
   15 |         {
      |         ^
foo.cc:28:18: error: expected ‘}’ at end of input
   28 |                 }
      |                  ^
foo.cc:3:1: note: to match this ‘{’
    3 | {
      | ^