/in/foo.cc: In function 'int main()':
/in/foo.cc:26:7: warning: unused variable 'td' [-Wunused-variable]
  date td;
       ^
/in/foo.cc: In function 'bool cmp(date, date)':
/in/foo.cc:22:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^