Define a class named Doctor which has $4$ Data members

Doc Name: a string type

patient$\_$Names: a string array with a unlimatied size, use it to save patient names $.$ "dynamic array"

patient num: an integer type. represent the number of patient currently.

salary: a double data type and methods:

a method that displays an object's information. void printInfo$()$;

a method to add patient' names. void addpatient$\_$names$($string$\_$patientname$)$;