ios8第1天答案2

编程题2

/*结合前面的“狗”类，设计一个“人”类
1> 属性

姓名
狗（养了一条狗）
2> 行为

喂狗：每喂一次，狗就会执行“吃”这个行为
遛狗：每溜一次，狗就会执行“跑”这个行为*/

person.h

#ifndef Person_h#define Person_h#import <Foundation/Foundation.h>#import "dog.h"@interface Person : NSObject{@public    NSString *name;    Dog *pet_dog;}- (void)FeedDog;- (void)WalkDog;@end#endif /* Person_h */

person.m

#import <Foundation/Foundation.h>#import "dog.h"#import "person.h"@implementation Person- (void)FeedDog{    NSLog(@"%@ 喂狗",name);    [pet_dog Eat];}- (void)WalkDog{    NSLog(@"%@ 溜狗",name);    [pet_dog Run];}@end

main.m

#import <Foundation/Foundation.h>#import "dog.h"#import "Person.h"int main(int argc, const char * argv[]) {    @autoreleasepool {        // insert code here...        Dog *dog_st = [Dog new];        dog_st->color = @"红色";        dog_st->speed = 5.0f;        dog_st->sex = @"雌性";        dog_st->weight = 20.0f;        Dog *dog_nd = [Dog new];        dog_nd->color = @"红色";        dog_nd->speed = 6.0f;        dog_nd->sex = @"雌性";        dog_nd->weight = 21.0f;        [dog_st Eat];        [dog_st Bark];        [dog_st Run];        [dog_st CmpColor:dog_nd];        [dog_st CmpSpeed:dog_nd];        Person *person = [Person new];        person->name = @"希尔薇";        person->pet_dog = dog_st;        [person FeedDog];        [person WalkDog];    }    return 0;}

3

/*设计一个”学生“类
1> 属性

姓名
生日
年龄
身高（单位是m）
体重（单位是kg）
性别
C语言成绩
OC成绩
iOS成绩
2> 行为

跑步：每跑步一次，身高增加1cm，体重减小0.5kg，输出跑完后的体重
吃饭：每吃一次，身高增加1cm，体重增加0.5kg，输出吃完后的体重
学习：每学习一次，3可成绩各加1分，输出学习完后的3科成绩
睡觉：输出所有的属性
比较C语言成绩：跟另外一个学生比较C语言成绩，返回成绩差（自己的成绩 - 其他人的成绩）
比较OC成绩：跟另外一个学生比较OC语言成绩，返回成绩差（自己的成绩 - 其他人的成绩）
比较iOS成绩：跟另外一个学生比较iOS语言成绩，返回成绩差（自己的成绩 - 其他人的成绩）
计算总分：算出3科成绩的总分
计算平均分：算出3科成绩的平均分*/

student.h

#ifndef student_h#define student_h#import <Foundation/Foundation.h>typedef enum{    stu_male = 0,    stu_female = 1,    stu_ry = 2,}STU_SEX;@interface Student: NSObject{@public    NSString *name;    NSString *birthday;    int age;    float height;    float weight;    STU_SEX sex;    float c_scores;    float oc_scores;    float ios_scores;}- (void)Run;-(void)Eat;-(void)Study;-(void)Sleep;-(double)CmpCscores:(Student*) pStu;-(double)CmpOCscores:(Student*) pStu;-(double)CmpIOSscores:(Student*) pStu;@end#endif /* student_h */

student.m

#import <Foundation/Foundation.h>#import "student.h"#import <Foundation/Foundation.h>@implementation Student- (void)Run{    height += 0.01;    weight -= 0.5;    NSLog(@"身高:%g m", height);    NSLog(@"体重:%g kg",weight);}- (void)Eat{    height += 0.01;    weight += 0.5;    NSLog(@"after eat height :%g", height );    NSLog(@"after eat weight:%g",weight);}-(void)Study{    c_scores += 1;    oc_scores += 1;    ios_scores += 1;    NSLog(@"after Study 各科成绩:%f,%f,%f,(顺序c,oc,ios)", c_scores , oc_scores , ios_scores );}-(void)Sleep{    NSLog(@"姓名:%@",name);    NSLog(@"生日:%@",birthday);    NSLog(@"年龄:%d",age);    NSLog(@"身高:%f m",height);    NSLog(@"体重:%f kg",weight);    NSLog(@"性别:%d",sex);    NSLog(@"C语言成绩:%f", c_scores);    NSLog(@"OC语言成绩:%f", oc_scores);    NSLog(@"IOS语言成绩:%f", ios_scores);}-(double)CmpCscores:(Student*) pStu;{    if(c_scores >= pStu-> c_scores )    {        return c_scores - pStu-> c_scores;    }    else    {        return pStu-> c_scores -c_scores;    }}-(double)CmpOCscores:(Student*) pStu;{    if(c_scores >= pStu-> oc_scores )    {        return oc_scores - pStu-> oc_scores ;    }    else    {        return  pStu-> oc_scores - oc_scores ;    }}-(double)CmpIOSscores:(Student*) pStu{    if(ios_scores >= pStu-> ios_scores)    {        return ios_scores - pStu-> ios_scores;    }    else    {        return  pStu-> ios_scores - ios_scores;    }}-(double)CalculateTotal{    return c_scores+ oc_scores+ ios_scores;}-(double)CalculateAvg{    double totalscores = [self CalculateTotal];    return totalscores/3;}@end

main.m

#import <Foundation/Foundation.h>#import "student.h"int main(int argc, const char * argv[]) {    @autoreleasepool {        // insert code here...        Student *stu = [Student new];        stu->name = @"zxx";        stu->birthday = @"1985-03-23";        stu->age = 30;        stu->height = 1.75;        stu->weight = 160;        stu->sex = stu_male;        stu->c_scores = 75.5;        stu->oc_scores = 90.0;        stu->ios_scores = 88.0;        [stu Run];        [stu Eat];        [stu Study];        [stu Sleep];        Student *stu_cmp = [Student new];        stu_cmp->name = @"zxx1";        stu_cmp->birthday = @"1985-03-23";        stu_cmp->age = 22;        stu_cmp->height = 1.75;        stu_cmp->weight = 160;        stu_cmp->sex = stu_male;        stu_cmp->c_scores = 73.5;        stu_cmp->oc_scores = 94.0;        stu_cmp->ios_scores = 80.0;        double cmp_cscores=[stu CmpCscores:stu_cmp];        NSLog(@"cmp_scores=%f",cmp_cscores);        double cmp_ocscores=[stu CmpOCscores:stu_cmp];        NSLog(@"cmp_ocscores=%f",cmp_ocscores);        double cmp_iosscores=[stu CmpIOSscores:stu_cmp];        NSLog(@"cmp_iosscores=%f",cmp_iosscores);    }    return 0;}

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