1. #import "Person.h"
   
2. 
   
3. int main(){
   
4. 
   
5. 
   
6.         Person *stu1=[[Person alloc]initWithName:@"liyi" age:21 score:24];
   
7.         Person *stu2=[[Person alloc]initWithName:@"liyi" age:31 score:24];
   
8.         Person *stu3=[[Person alloc]initWithName:@"liyi" age:1 score:24];
   
9.         Person *stu4=[[Person alloc]initWithName:@"liyi" age:61 score:24];
   
10.         Person *stu5=[[Person alloc]initWithName:@"liyi" age:41 score:24];
    
11.         int i=0,j;
    
12.         BOOL flag=YES;
    
13.        
    
14.         Person *temp=nil;
    
15.         NSArray *stuArray = [NSArray arrayWithObjects:stu1, stu2,stu3,stu4,stu5, nil];
    
16.         int count=[stuArray count];
    
17.         for(i=count-1;i>=0;i++){
    
18.                 NSLog([stuArray objectAtIndex:i] );
    
19.         }
    
20. return 0;
    
21. }

复制代码

Person.h

1. #import <Foundation/Foundation.h>
   
2. @interface Person :NSObject
   
3. {
   
4.         @private NSString *_name;
   
5.         @private int _age;
   
6.         @private int _score;
   
7. }
   
8. -(void) setName:(NSString *)name;
   
9. -(NSString *) name;
   
10. -(void) setAge:(int) age;
    
11. -(int) age;
    
12. -(void) setScore:(int) score;
    
13. -(int) score;
    
14. - (id) initWithName:(NSString *)name age:(int)age score:(int)score;
    
15. @end

复制代码

Person.m

1. #import "Person.h"
   
2. @implementation Person
   
3. 
   
4. -(void) setName:(NSString *)name{
   
5.        
   
6.                 _name=name;
   
7.        
   
8. }
   
9. -(NSString *)  name{
   
10.         return _name;
    
11. }
    
12. -(void) setAge:(int) age{
    
13.         _age=age;
    
14. }
    
15. -(int) age{
    
16.         return _age;
    
17. }
    
18. -(void) setScore:(int) score{
    
19.         _score=score;
    
20. }
    
21. -(int) score{
    
22.         return _score;
    
23. }
    
24. 
    
25. 
    
26. - (id) initWithName:(NSString *)name age:(int)age score:(int)score{
    
27.         if(self=[super init]){
    
28.                 _name=name;
    
29.                 _age=age;
    
30.                 _score=score;
    
31.         }
    
32.         return self;
    
33. }
    
34. 
    
35. - (NSString *)description{
    
36.         return [NSString stringWithFormat:@"My Name Is %@  Age Is %d Score Is %d",_name,_age,_score];
    
37. }
    
38. @end

复制代码

运行的时候报错。。。

把main函数里的代码放到@autoreleasepool｛｝里试试

Jr_711 发表于 2014-11-23 13:24
把main函数里的代码放到@autoreleasepool｛｝里试试

@autoreleasepool｛｝好像是编译器特性，我没有使用Xcode，好像不能用这个。。。

for(i=count-1;i>=0;i++){
                NSLog([stuArray objectAtIndex:i] );
这应该是i--吧(⊙o⊙)，NSLog我没见过这种用法- -！。。NSLog(@"%@", [stuArray objectAtIndex:i]);
如果你是想打印Person5个对象的话>_<

从今以后 发表于 2014-11-23 19:52
for(i=count-1;i>=0;i++){
                NSLog([stuArray objectAtIndex:i] );
这应该是i--吧(⊙o⊙)，N ...

:Q，是啊