Objective-c:foundation Framework-Common class-nsnumber

Nsarray, Nsdictionary is not available to store the basic data types in C language. NSNumber can wrap a basic data type into an object, which indirectly saves the base data type into a collection class such as Nsarray, Nsdictionary, and so on. Use the following:

#import<Foundation/Foundation.h>voidNumber () {//wraps 10 of the int type into a NSNumber objectNSNumber *number = [NSNumber numberwithint:Ten]; NSLog (@"number=%@", number); Nsmutablearray*array =[Nsmutablearray array]; //adding values to the array[Array Addobject:number]; //removed or a NSNumber object, does not support automatic unpacking (that is, does not automatically convert to int type)NSNumber *number1 =[Array lastobject]; //Convert nsnumber to int type    intnum =[Number1 intvalue]; NSLog (@"num=%i", num);}

Objective-c:foundation Framework-Common class-nsnumber