/in/foo.cc: In constructor 'Complex::Complex()':
/in/foo.cc:9:23: warning: unused variable 're' [-Wunused-variable]
         Complex(){int re=0,in=0;}
                       ^~
/in/foo.cc:9:28: warning: unused variable 'in' [-Wunused-variable]
         Complex(){int re=0,in=0;}
                            ^~