/in/foo.cc: In function 'int main()':
/in/foo.cc:37:7: error: expected ';' before 't1'
  time t1(hour,minute,second);
       ^~
/in/foo.cc:37:29: warning: statement is a reference, not call, to function 'time' [-Waddress]
  time t1(hour,minute,second);
                             ^
/in/foo.cc:37:29: warning: statement has no effect [-Wunused-value]
/in/foo.cc:39:2: error: 't1' was not declared in this scope
  t1.add(addsecond);
  ^~