Objective-C tutorial 5 - cEmployee(3) 之 Inheritance－kk匡的日記&學習筆記

/*
cFullTimeStaff繼承cEmployee。
cFullTimeStaff和cEmployee各自有interface。
cFullTimeStaff多了p_mEmployeeWelfare、全职員工褔利。和printWelfare、列印全职員工褔利功能。
*/

#import <Foundation/Foundation.h>

@interface cEmployee : NSObject
{
NSString *p_strEmploeeName;
NSInteger p_mSalary;
NSString *p_strJobPosition;
NSInteger p_mBonus;
NSInteger p_mTotalSalary;
}

- (id)initEmployee:(NSString *)strEmploeeName andSalary:(NSInteger)mSalary andJobPosition:(NSString *)strJobPosition;
- (void)printInfo;
- (void)printBonus;
- (void)printTotalSalary;

@property(nonatomic, readwrite) NSInteger p_mBonus;

@end

@implementation cEmployee

@synthesize p_mBonus;

- (id)initEmployee:(NSString *)strEmploeeName andSalary:(NSInteger)mSalary andJobPosition:(NSString *)strJobPosition
   {
p_strEmploeeName = strEmploeeName;
p_mSalary = mSalary;
p_strJobPosition = strJobPosition;
return self;
}

- (void)printInfo
   {
NSLog(@"Employee Info");
NSLog(@"Name: %@", p_strEmploeeName);
NSLog(@"mSalary: %ld", p_mSalary);
NSLog(@"JobPosition: %@", p_strJobPosition);
NSLog(@"");
}

- (void)printBonus
   {
NSLog(@"Employee Bonus");
NSLog(@"Name: %@", p_strEmploeeName);
NSLog(@"Bonus: %ld", p_mBonus);
NSLog(@"");
}

- (void)printTotalSalary
   {
NSLog(@"Employee TotalSalary");
p_mTotalSalary = p_mSalary + p_mBonus;
NSLog(@"Name: %@", p_strEmploeeName);
NSLog(@"TotalSalary: %ld", p_mTotalSalary);
NSLog(@"");
}

@end

@interface cFullTimeStaff : cEmployee
{
NSInteger p_mEmployeeWelfare;
}
- (id)initFullTimeStaff:(NSString *)strEmploeeName andWelfare:(NSInteger)mEmployeeWelfare;
- (void) printWelfare;

@property(nonatomic, readwrite) NSInteger p_mEmployeeWelfare;
@end

@implementation cFullTimeStaff

@synthesize p_mEmployeeWelfare;

   - (id)initFullTimeStaff:(NSString *)strEmploeeName andWelfare:(NSInteger)mEmployeeWelfare
   {
       p_strEmploeeName = strEmploeeName;
       p_mEmployeeWelfare = mEmployeeWelfare;
return self;
   }

   - (void)printWelfare {
       NSLog(@"Employee Welfare");
       NSLog(@"Name: %@", p_strEmploeeName);
       NSLog(@"Welfare: %ld", p_mEmployeeWelfare);
   }
@end

int main(int argc, const char * argv[])
{
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

cEmployee *cEmployee1 = [[cEmployee alloc]initEmployee:@"Lei Wei Wei" andSalary:8500 andJobPosition:@"Boss"];
cEmployee1.p_mBonus = 1350;

[cEmployee1 printInfo];
[cEmployee1 printBonus];
[cEmployee1 printTotalSalary];

cFullTimeStaff *cFullTimeStaff1 = [[cFullTimeStaff alloc]initFullTimeStaff:@"Jian Yun Tian" andWelfare: 4300];
[cFullTimeStaff1 printWelfare];

return 0;
}

Output result:

2016-10-10 11:54:26.615 a.out[15172] Employee Info
2016-10-10 11:54:26.616 a.out[15172] Name: Lei Wei Wei
2016-10-10 11:54:26.616 a.out[15172] mSalary: 8500
2016-10-10 11:54:26.616 a.out[15172] JobPosition: Boss
2016-10-10 11:54:26.616 a.out[15172]
2016-10-10 11:54:26.616 a.out[15172] Employee Bonus
2016-10-10 11:54:26.616 a.out[15172] Name: Lei Wei Wei
2016-10-10 11:54:26.616 a.out[15172] Bonus: 1350
2016-10-10 11:54:26.616 a.out[15172]
2016-10-10 11:54:26.616 a.out[15172] Employee TotalSalary
2016-10-10 11:54:26.616 a.out[15172] Name: Lei Wei Wei
2016-10-10 11:54:26.616 a.out[15172] TotalSalary: 9850
2016-10-10 11:54:26.616 a.out[15172]
2016-10-10 11:54:26.616 a.out[15172] Employee Welfare
2016-10-10 11:54:26.616 a.out[15172] Name: Jian Yun Tian
2016-10-10 11:54:26.616 a.out[15172] Welfare: 4300