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#import <Foundation/Foundation.h>

#import "EOCPerson.h"

typedef NS_ENUM(NSUInteger, EOCEmployeeType) {

EOCEmployeeTypeDeveloper,

EOCEmployeeTypeDesigner,

EOCEmployeeTypeFinance,

};

@interface EOCEmployee : NSObject <NSCopying>

- (void) addEmployee:(EOCPerson *)person;

- (void) doSomeWork;

+ (EOCEmployee *)employeeWithType:(EOCEmployeeType)type;

#import "EOCEmployee.h"

#import "EOCEmployeeDeveloper.h"

#import "EOCEmployeeFinance.h"

#import "EOCEmployeeDesigner.h"

int EOCConst = 1;

@implementation EOCEmployee

- (void)addEmployee:(EOCPerson *)person {

return;

}

- (void)doSomeWork {

return;

}

+ (EOCEmployee *)employeeWithType:(EOCEmployeeType)type {

switch (type) {

case EOCEmployeeTypeDeveloper:

return [EOCEmployeeDeveloper new];

break;

case EOCEmployeeTypeFinance:

return [EOCEmployeeFinance new];

break;

case EOCEmployeeTypeDesigner:

return [EOCEmployeeDesigner new];

break;

}

}

- (instancetype)copyWithZone:(NSZone *)zone {

return [[EOCEmployee allocWithZone:zone] init];

}