#import <Foundation/Foundation.h>
#import "Person.h"

@interface Teacher: Person {
   NSArray *classes;
   NSNumber *salary;
   NSString *areaOfExpertise;
}

- (id)initWithName:(NSString *)_name 
               age:(NSNumber *)_age 
            gender:(Gender)_gender 
           classes:(NSArray *)_classes 
            salary:(NSNumber *)_salary  
   areaOfExpertise:(NSString *)_areaOfExpertise;

@end
