/in/foo.cc: In function 'int main()':
/in/foo.cc:7:14: warning: statement has no effect [-Wunused-value]
    7 |         for(i<=n;i++)
      |             ~^~~
/in/foo.cc:7:21: error: expected ';' before ')' token
    7 |         for(i<=n;i++)
      |                     ^
      |                     ;