Object-c Object-Oriented implementation class

Generally involves the object-oriented C#,java are inevitably involved in classes, C # The suffix name for the class in the. Cs,java is. Java,object-c typically uses two files to describe a class with a suffix of. h as the class's declaration file, which declares member variables and methods,. m files are primarily used to implement methods in declarations, and Java and C # declaration classes use the Class keyword, OC Declaration class with the word @interface and @end, the implementation of the class is @implementation and @end, with the other a bit different, method definition, method calls are not the same, a little bit of a look at it:

New Cocoa Class:

Language selection OC, Class name book:

Code in Book.h:

#import <Foundation/Foundation.h> @interface book:nsobject{    nsstring *_author;    NSString *_publishdate;} @property int number;-(void) getdetial; @end

Code in BOOK.M:

#import "Book.h" @implementation book@synthesize number;-(void) getdetial{    NSLog (@ "on Programmer's Professionalism");} @end

The invocation in the main function:

        Book *book=[book new];    [Book getdetial];    Book. number=100;    NSLog (@ "Number of books:%d", book.) number);

The code here temporarily does not parse, look at another piece of code:

typedef enum {Man    ,    woman} Sex, @interface person:nsobject{    @public    nsstring *name;    NSString *school;    Sex sex;    int age;} -(void) say;-(int) sum: (int) NumA secondnumber: (int) NumB; @end @implementation person-(void) say{NSLog    (@ "say more and more wrong, Less say less Wrong ");} -(int) sum: (int) NumA secondnumber: (int) numb{    return numa+numb;} @end

The call in the main function, the code is as follows:

Person *person=[person new];    person->age=25;    person->sex=man;        NSLog (@ "Age:%d, Gender:%@", person->age,@ "test");    [person say];    int B=[person sum:10 secondnumber:10];    NSLog (@ "Two numbers added and is:%d", b);

The member variables in the class are all in {}, and if you want to invoke them when initializing the class, access them directly using the-----if the scope of the variable is accessible, generally the scope is @public, @protected, @private, if you have contact with other languages, Public is accessible, and protected is accessible to both the parent and child classes, and private to the class itself.

C # protects fields by manipulating properties, and in OC, so the first piece of code appears @property and @synthesize;

The method definition + means that the class method is also a static method-the object method:

-(int) sum: (int) NumA secondnumber: (int) NumB

int is the return value type, followed by a function that is: (type) name, if it is more than the space after the repetition, as above, very good understanding; new languages are used in many, but generally the form of a new object is:

Person *person=[[person alloc] init];

The line pen hurriedly, unavoidably omission, if have improper, many advice, first thanked ~

Object-c Object-Oriented implementation class