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以下是一個使用Objective-C編寫的簡單示例代碼，用于展示如何創(chuàng)建一個簡單的學(xué)生管理系統(tǒng)。該系統(tǒng)可以添加學(xué)生、顯示學(xué)生列表以及按姓名進(jìn)行搜索。請注意，這只是一個基本的示例，沒有實際的數(shù)據(jù)存儲或用戶界面。
```objective-c
#import
// 學(xué)生類
@interface Student : NSObject
@property (nonatomic, strong) NSString *name;
@property (nonatomic, strong) NSString *studentID;
- (instancetype)initWithName:(NSString *)name studentID:(NSString *)studentID;
@end
@implementation Student
- (instancetype)initWithName:(NSString *)name studentID:(NSString *)studentID {
??self = [super init];
??if (self) {
????_name = name;
????_studentID = studentID;
??}
??return self;
}
@end
// 學(xué)生管理器類
@interface StudentManager : NSObject
@property (nonatomic, strong) NSMutableArray *students;
- (void)addStudent:(Student *)student;
- (void)displayStudents;
- (Student *)searchStudentByName:(NSString *)name;
@end
@implementation StudentManager
- (instancetype)init {
??self = [super init];
??if (self) {
????_students = [[NSMutableArray alloc] init];
??}
??return self;
}
- (void)addStudent:(Student *)student {
??[self.students addObject:student];
}
- (void)displayStudents {
??for (Student *student in self.students) {
????NSLog(@"Name: %@, ID: %@", student.name, student.studentID);
??}
}
- (Student *)searchStudentByName:(NSString *)name {
??for (Student *student in self.students) {
????if ([student.name isEqualToString:name]) {
??????return student;
????}
??}
??return nil;
}
@end
// 主函數(shù)
int main(int argc, const char * argv[]) {
??@autoreleasepool {
????StudentManager *manager = [[StudentManager alloc] init];
?????
????// 添加學(xué)生
????Student *student1 = [[Student alloc] initWithName:@"Alice" studentID:@"001"];
????[manager addStudent:student1];
?????
????Student *student2 = [[Student alloc] initWithName:@"Bob" studentID:@"002"];
????[manager addStudent:student2];
?????
????Student *student3 = [[Student alloc] initWithName:@"Charlie" studentID:@"003"];
????[manager addStudent:student3];
?????
????// 顯示學(xué)生列表
????[manager displayStudents];
?????
????// 搜索學(xué)生
????NSString *searchName = @"Bob";
????Student *foundStudent = [manager searchStudentByName:searchName];
????if (foundStudent) {
??????NSLog(@"Found student: Name: %@, ID: %@", foundStudent.name, foundStudent.studentID);
????} else {
??????NSLog(@"Student with name %@ not found.", searchName);
????}
??}
??return 0;
}
```
以上示例代碼演示了如何創(chuàng)建學(xué)生類和學(xué)生管理器類。學(xué)生類具有姓名和學(xué)生ID屬性，并且可以使用初始化方法進(jìn)行初始化。學(xué)生管理器類具有一個學(xué)生數(shù)組，可以添加學(xué)生、顯示學(xué)生列表以及按姓名搜索學(xué)生。在主函數(shù)中，我們創(chuàng)建了一個學(xué)生管理器對象，添加了幾個學(xué)生，并演示了顯示學(xué)生列表和按姓名搜索學(xué)生的功能。請注意，這只是一個簡單的示例，實際的學(xué)生管理系統(tǒng)可能包含更多的功能和數(shù)據(jù)存儲方式。
當(dāng)然！以下是另一個Objective-C代碼示例，用于演示如何使用Objective-C編寫一個簡單的圖書館管理系統(tǒng)。該系統(tǒng)可以添加圖書、顯示圖書列表以及按標(biāo)題進(jìn)行搜索。
```objective-c
#import
// 圖書類
@interface Book : NSObject
@property (nonatomic, strong) NSString *title;
@property (nonatomic, strong) NSString *author;
- (instancetype)initWithTitle:(NSString *)title author:(NSString *)author;
@end
@implementation Book
- (instancetype)initWithTitle:(NSString *)title author:(NSString *)author {
??self = [super init];
??if (self) {
????_title = title;
????_author = author;
??}
??return self;
}
@end
// 圖書館管理器類
@interface LibraryManager : NSObject
@property (nonatomic, strong) NSMutableArray *books;
- (void)addBook:(Book *)book;
- (void)displayBooks;
- (Book *)searchBookByTitle:(NSString *)title;
@end
@implementation LibraryManager
- (instancetype)init {
??self = [super init];
??if (self) {
????_books = [[NSMutableArray alloc] init];
??}
??return self;
}
- (void)addBook:(Book *)book {
??[self.books addObject:book];
}
- (void)displayBooks {
??for (Book *book in self.books) {
????NSLog(@"Title: %@, Author: %@", book.title, book.author);
??}
}
- (Book *)searchBookByTitle:(NSString *)title {
??for (Book *book in self.books) {
????if ([book.title isEqualToString:title]) {
??????return book;
????}
??}
??return nil;
}
@end
// 主函數(shù)
int main(int argc, const char * argv[]) {
??@autoreleasepool {
????LibraryManager *libraryManager = [[LibraryManager alloc] init];
?????
????// 添加圖書
????Book *book1 = [[Book alloc] initWithTitle:@"Book 1" author:@"Author 1"];
????[libraryManager addBook:book1];
?????
????Book *book2 = [[Book alloc] initWithTitle:@"Book 2" author:@"Author 2"];
????[libraryManager addBook:book2];
?????
????Book *book3 = [[Book alloc] initWithTitle:@"Book 3" author:@"Author 3"];
????[libraryManager addBook:book3];
?????
????// 顯示圖書列表
????[libraryManager displayBooks];
?????
????// 搜索圖書
????NSString *searchTitle = @"Book 2";
????Book *foundBook = [libraryManager searchBookByTitle:searchTitle];
????if (foundBook) {
??????NSLog(@"Found book: Title: %@, Author: %@", foundBook.title, foundBook.author);
????} else {
??????NSLog(@"Book with title %@ not found.", searchTitle);
????}
??}
??return 0;
}
```
以上示例代碼演示了如何創(chuàng)建圖書類和圖書館管理器類。圖書類具有標(biāo)題和作者屬性，并且可以使用初始化方法進(jìn)行初始化。圖書館管理器類具有一個圖書數(shù)組，可以添加圖書、顯示圖書列表以及按標(biāo)題搜索圖書。在主函數(shù)中，我們創(chuàng)建了一個圖書館管理器對象，添加了幾本圖書，并演示了顯示圖書列表和按標(biāo)題搜索圖書的功能。
請注意，這只是一個簡單的示例，實際的圖書館管理系統(tǒng)可能包含更多的功能和數(shù)據(jù)存儲方式。此示例僅用于演示Objective-C語言的基本用法。
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