xcode Objective C-构建类/对象

Posted 2021-02-24

Example of how to build and call a class or object

//----------------------------------
//  Person.h
 
#import <Foundation/Foundation.h>
 
@interface Person : NSObject {
    int age;
    int weight;
}
-(void) print;
-(void) setAge: (int) a;
-(void) setWeight: (int) w;
@end
 
 
 
//----------------------------------
//  Person.m
//  codeTester
 
#import "Person.h"
 
@implementation Person
-(void) print{
    NSLog(@"I am %i years old and weight %i pounds", age, weight);
}
-(void) setAge: (int) a{
    age=a;
}
-(void) setWeight: (int) w{
    weight=w;
}
@end
 
 
 
//----------------------------------
//how to call
 
#import "Person.h"      //dont forget to import it
 
Person *bucky;
bucky = [Person alloc]; //give it memory
bucky = [bucky init];   //allows us to defualt init metod
[bucky setAge:23];
[bucky setWeight:350];
[bucky print];