objective-c简单例子，objective-c例子

objective-c简单例子，objective-c例子

//
//  main.m
//  oc002
//
//  Created by wu jianhua on 16-8-3.
//  Copyright (c) 2016年 wujianhua. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface SampleClass:NSObject
{
    @private
    int _age;
}
@property (assign,nonatomic) int age;

- (id)initWithAge:(int)newAge;

- (void)sampleMethod;

- (int)max:(int)num1 andNum2:(int)num2;

- (void)swap:(int* )num1 andNum2:(int* )num2;


@end


@implementation SampleClass

- (id)initWithAge:(int)newAge
{
    if(self=[super init])
    {
        _age=newAge;
    }
    return self;
}


- (void)sampleMethod{
    NSLog(@"Hello,sampleMethod!");
}

- (int)max:(int)num1 andNum2:(int)num2
{
    int result;
    if (num1 > num2)
    {
        result = num1;
    }
    else
    {
        result = num2;
    }    
    return result;
    
}

- (void)swap:(int* )num1 andNum2:(int* )num2
{
    int temp;
    temp = *num1; /* save the value of num1 */
    *num1 = *num2;    /* put num2 into num1 */
    *num2 = temp; /* put temp into num2 */
    
    return;
    
}
- (void)dealloc
{
    NSLog(@"SampleClass dealloc");
    [super dealloc];
}
@end

void teststring()
{
    NSString* headerData=@" NSAutoreleasePool *pool=[[NSAutoreleasePool alloc] init]; ";
    
    headerData = [headerData stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];  //去除掉首尾的空白字符和换行字符
    headerData = [headerData stringByReplacingOccurrencesOfString:@"\r" withString:@""];
    headerData = [headerData stringByReplacingOccurrencesOfString:@"\n" withString:@""];
    headerData = [headerData stringByReplacingOccurrencesOfString:@" " withString:@""];
    
    
    NSLog(@"headerData=%@",headerData);
    
}
//http://www.yiibai.com/objective_c/objective_c_program_structure.html
int main(int argc, const char * argv[])
{

    NSAutoreleasePool *pool=[[NSAutoreleasePool alloc] init];
    
    NSLog(@"start my oc");
    
    [pool drain];
    
    teststring();
    
    SampleClass *sampleClass = [[SampleClass alloc]init];
    [sampleClass sampleMethod];
    
    [sampleClass release];
    
    SampleClass *sc = [[SampleClass alloc]initWithAge:1024];
    
    NSLog(@"age is %i",[sc age]);
    sc.age=56;
    NSLog(@"age is %i",sc.age);
    
     NSLog(@"max is %i",[sc max:15 andNum2:99]);
    int a=100;
    int b=150;
    [sc swap:&a andNum2:&b];
    
    NSLog(@"a is %i,b is %i",a,b);
    
    [sc release];

    
    return 0;
}