/in/foo.cc: In function 'int main()':
/in/foo.cc:6:14: error: expected ';' before 'n'
    6 |         scanf n;
      |              ^~
      |              ;
/in/foo.cc:6:9: warning: statement is a reference, not call, to function 'scanf' [-Waddress]
    6 |         scanf n;
      |         ^~~~~
/in/foo.cc:6:9: warning: statement has no effect [-Wunused-value]