/in/foo.c: In function 'main':
/in/foo.c:6:4: warning: statement with no effect [-Wunused-value]
    6 |  {n>=3};
      |   ~^~~
/in/foo.c:6:7: error: expected ';' before '}' token
    6 |  {n>=3};
      |       ^
      |       ;