/in/foo.cc: In function 'int main()':
/in/foo.cc:7:7: warning: unused variable 'n' [-Wunused-variable]
    7 | float n;
      |       ^
/in/foo.cc:8:8: warning: unused variable 'gdhhfd' [-Wunused-variable]
    8 | double gdhhfd;
      |        ^~~~~~