OC 简单实现图书馆功能
2024-05-18 08:14:12
先创建一个Book的类, Book.h
#import <Foundation/Foundation.h>
@interface Book : NSObject
{NSString *_bookName;// 书名NSString *_bookAuthor;// 作者NSString *_bookPublicHouse; // 出版社CGFloat _bookPrice; // 价格}
#pragma mark 初始化方法
-(id)initWithBookName : (NSString *)bookNamewithBookAuthor : (NSString *)bookAuthorwithBookPublicHouse : (NSString *)bookPublicHousewithBookPrice : (CGFloat )bookPrice;#pragma mark 便利构造器
+(id)bookWithBookName : (NSString *)bookNamewithBookAuthor : (NSString *)bookAuthorwithBookPublicHouse : (NSString *)bookPublicHousewithBookPrice : (CGFloat )bookPrice;#pragma mark 设置器
-(void)setBOOKName:(NSString *)bookName;
-(void)setBookAuthor:(NSString *)bookAuthor;
-(void)setBOOKPublicHouse:(NSString *)bookPublicHouse;
-(void)setBookPrice:(CGFloat )bookPrice;#pragma mark 访问器-(NSString *)getterBookName;
-(NSString *)getterBookAuthor;
-(NSString *)getterBookPublicHouse;
-(CGFloat )getterBookPrice;
@end
// Book 类的实现文件.m文件
#import "Book.h"@implementation Book#pragma mark 初始化方法
-(id)initWithBookName : (NSString *)bookNamewithBookAuthor : (NSString *)bookAuthorwithBookPublicHouse : (NSString *)bookPublicHousewithBookPrice : (CGFloat )bookPrice
{self = [super init];if (self) {_bookName = bookName;_bookAuthor = bookAuthor;_bookPublicHouse = bookPublicHouse;_bookPrice = bookPrice;}return self;
}#pragma mark 便利构造器
+(id)bookWithBookName : (NSString *)bookNamewithBookAuthor : (NSString *)bookAuthorwithBookPublicHouse : (NSString *)bookPublicHousewithBookPrice : (CGFloat )bookPrice
{Book *book = [[Book alloc] initWithBookName:bookName withBookAuthor:bookAuthor withBookPublicHouse:bookPublicHouse withBookPrice:bookPrice];return book;
}#pragma mark 设置器
-(void)setBOOKName:(NSString *)bookName
{_bookName = bookName;
}
-(void)setBookAuthor:(NSString *)bookAuthor
{_bookAuthor = bookAuthor;
}
-(void)setBOOKPublicHouse:(NSString *)bookPublicHouse
{_bookPublicHouse = bookPublicHouse;
}
-(void)setBookPrice:(CGFloat )bookPrice
{_bookPrice = bookPrice;
}#pragma mark 访问器-(NSString *)getterBookName
{return _bookName;
}
-(NSString *)getterBookAuthor
{return _bookAuthor;
}
-(NSString *)getterBookPublicHouse
{return _bookPublicHouse;
}
-(CGFloat )getterBookPrice
{return _bookPrice;
}-(NSString *)description
{return [NSString stringWithFormat:@"书名:%@ 作者:%@ 出版社:%@ 价格:%.2f",_bookName,_bookAuthor,_bookPublicHouse,_bookPrice];
}@end
#import <Foundation/Foundation.h>
@class Book; // 声明 book 是一个类@interface Library : NSObject{NSString *_libraryName; // 图书馆名字NSMutableArray *_libraryArray; // 存放图书的地方.
}#pragma mark 便初始化方法-(id)initWithLibraryName:(NSString *)name;
#pragma mark 设置图书馆名字-(void)setLibraryName:(NSString *)libraryName;
#pragma mark 访问器
-(NSString *)getterLibrary;#pragma mark 添加图书
-(BOOL)addBookToLibrary:(Book *)book;#pragma mark 删除图书
-(BOOL)deletedBookFromLibrary:(Book *)book;
#pragma mark 根据图书的作者来删除图书
-(BOOL)deleteBookFromLibraryByBookAuthor:(NSString *)bookAuthor;#pragma mark 按照图书馆名字来查找图书
-(NSArray *)findBookFormLibraryByName:(NSString *)bookName;#pragma mark 按照价格来查找图书
-(NSArray *)findBookFormLibraryByPrice:(CGFloat )bookPrice;#pragma mark 按照作者来查找图书
-(NSArray *)findBookFormLibraryByAuthor:(NSString *)bookAuthor;#pragma mark 按照出版社查找图书,
-(NSArray *)findBookFormLibraryByPublicHouse:(NSString *)publicHouse;
#pragma mark 展示输出所有的书
-(void)showAllBooks;
@end#import "Library.h"
#import "Book.h"
@implementation Library#pragma mark 初始化方法//-(id)initWithLibraryName:(NSString *)name;
- (instancetype)initWithLibraryName:(NSString *)name
{self = [super init];if (self) {_libraryName = name;_libraryArray = [NSMutableArray arrayWithCapacity:10];}return self;
}#pragma mark 设置图书馆名字-(void)setLibraryName:(NSString *)libraryName
{_libraryName = libraryName;
}
#pragma mark 访问器
-(NSString *)getterLibrary
{return _libraryName;
}#pragma mark 添加图书
-(BOOL)addBookToLibrary:(Book *)book
{[_libraryArray addObject:book];return YES;
}#pragma mark 删除图书
-(BOOL)deletedBookFromLibrary:(Book *)book
{[_libraryArray removeObject:book];return YES;
}// 在for 循环中找到东西,不要直接删除,会造成崩溃,.#pragma mark 根据图书的作者来删除图书
-(BOOL)deleteBookFromLibraryByBookAuthor:(NSString *)bookAuthor
{NSMutableArray *deleteArray = [NSMutableArray array];for (Book *temp in _libraryArray) {if ([[temp getterBookAuthor]isEqualToString:bookAuthor]) {
// 判断两个字符串是否相等.// [_libraryArray removeObject:temp] // 这个做法不可取,容易造成崩溃[deleteArray addObject:temp];}}[_libraryArray removeObjectsInArray:deleteArray];return YES;
}#pragma mark 按照图书名字来查找图书
-(NSArray *)findBookFormLibraryByName:(NSString *)bookName
{NSMutableArray *array = [NSMutableArray array];for (Book *temp in _libraryArray) {if ([[temp getterBookName] isEqualToString:bookName]) {[array addObject:temp];}}return array;}#pragma mark 按照价格来查找图书
-(NSArray *)findBookFormLibraryByPrice:(CGFloat )bookPrice
{NSMutableArray *array = [NSMutableArray array];for (Book *temp in _libraryArray) {if ([temp getterBookPrice]-bookPrice < 0.000001 && [temp getterBookPrice]-bookPrice > -0.000001 ) {[array addObject:temp];}}return array;
}#pragma mark 按照作者来查找图书
-(NSArray *)findBookFormLibraryByAuthor:(NSString *)bookAuthor
{NSMutableArray *array = [NSMutableArray array];for (Book *temp in _libraryArray) {if ([[temp getterBookAuthor] isEqualToString:bookAuthor]) {[array addObject:temp];}}return array;}#pragma mark 按照出版社查找图书,
-(NSArray *)findBookFormLibraryByPublicHouse:(NSString *)publicHouse
{NSMutableArray *array = [NSMutableArray array];for (Book *temp in _libraryArray) {if ([[temp getterBookPublicHouse] isEqualToString:publicHouse]) {[array addObject:temp];}}return array;
}#pragma mark 展示所有的书籍
-(void)showAllBooks
{for (Book *temp in _libraryArray) {NSLog(@"%@ %@ %@ %.2f",[temp getterBookName],[temp getterBookAuthor],[temp getterBookPublicHouse],[temp getterBookPrice]);}}@end// 主函数 main 函数中的实现
#import <Foundation/Foundation.h>
#import "Book.h"
#import "Library.h"
int main(int argc, const char * argv[])
{Book *Book1 = [Book bookWithBookName:@"西游记" withBookAuthor:@"吴承恩" withBookPublicHouse:@"唐僧出版社" withBookPrice:22.3];NSLog(@"%@",Book1);Book *book2 = [Book bookWithBookName:@"大宋的智慧" withBookAuthor:@"孑雨" withBookPublicHouse:@"长江出版社" withBookPrice:50];Book *book3 = [Book bookWithBookName:@"狂人日记" withBookAuthor:@"鲁迅" withBookPublicHouse:@"内蒙古出版社" withBookPrice:88];Book *book4 = [Book bookWithBookName:@"平凡的时间" withBookAuthor:@"路瑶" withBookPublicHouse:@"盗版" withBookPrice:5];Book *book5 = [Book bookWithBookName:@"小时代" withBookAuthor:@"郭敬明" withBookPublicHouse:@"长江文艺出版社" withBookPrice:36];Book *book6 = [Book bookWithBookName:@"梦里花落知多少" withBookAuthor:@"郭敬明" withBookPublicHouse:@"长江文艺出版社" withBookPrice:2.5];Book *book7 = [Book bookWithBookName:@"梦里花落知多少1" withBookAuthor:@"郭敬明" withBookPublicHouse:@"长江文艺出版社" withBookPrice:2.5];
// 创建一个图书馆Library *library = [[Library alloc] initWithLibraryName:@"0407"];[library addBookToLibrary:Book1];[library addBookToLibrary:book2];[library addBookToLibrary:book3];[library addBookToLibrary:book4];[library addBookToLibrary:book5];[library addBookToLibrary:book6];[library addBookToLibrary:book7];[library showAllBooks];printf("\n");
// [library deleteBookFromLibraryByBookAuthor : @"郭敬明"];
//
// [library showAllBooks];NSArray *array = [library findBookFormLibraryByPrice:2.5];for (Book *temp in array) {NSLog(@"%@",temp);}return 0;
}
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