Consider the following structure definitions and declaration:$$struct date $\{$ int day;$$ int month;$$ int year;$\}$;struct name $\{$ char$*$first;$$ char$*$last;$$ char$$ initial;$\}$;struct streetAddr $\{$ char$*$streetName;$$ int$$number;$\}$;struct address $\{$ struct streetAddr$$street;$$ char$*$town;$$ char$*$state;$\}$;struct person $\{$ struct name$$ legalName;$$struct name$$ penName;$$struct date$$ birthday;$$char$$ gender;$$int$$ age;$$struct address home;$\}$;struct$$ person alice$=.....$ some initialization code here $......$Write an expression that represents alice's$$age$.$