OC语法--NSNumber对象

淡淡的烟草味﹌ 2022-06-18 03:46 115阅读 0赞

NSNumber对象用法：

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1.  void test(void)  
    
2.  \{   
    
3.      NSNumber \*myNumber, \*floatNumber,\*intNumber;  
    
4.      NSInteger myInt;  
    
5.        
    
6.      intNumber = \[NSNumber numberWithInt:10\];  
    
7.      myInt = \[intNumber integerValue\];  
    
8.      NSLog(@"%li",myInt);  
    
9.        
    
10.     myNumber = \[NSNumber numberWithLong:0xabced\];  
    
11.     NSLog(@"%lx",\[myNumber longValue\]);  
    
12.       
    
13.     floatNumber = \[NSNumber numberWithFloat:9\];  
    
14.     NSLog(@"%g",\[floatNumber floatValue\]);  
    
15.       
    
16.     if (\[intNumber isEqualToNumber:floatNumber\] == YES) \{   
    
17.         NSLog(@"num are equal");  
    
18.     \} else \{   
    
19.         NSLog(@"num are not equal");  
    
20.     \}  
    
21.     if (\[intNumber compare:floatNumber\] == NSOrderedAscending) \{   
    
22.         NSLog(@"first number less than second");  
    
23.     \}  
    
24. \}

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