foo.c: In function ‘main’:
foo.c:12:16: warning: statement with no effect [-Wunused-value]
   12 |         else (a<b)
      |              ~~^~~
foo.c:12:19: error: expected ‘;’ before ‘{’ token
   12 |         else (a<b)
      |                   ^
      |                   ;
   13 |         {
      |         ~