Objective C getter method not working for property - objective-c

Question

I was playing around with objective C. This is my code for a class I wrote , arithmetic.h:
#import <Foundation/Foundation.h>
#interface arithmetic : NSObject
#property int cur;
-(id)initWithNumber:(int)number;
#end
#implementation arithmetic
#synthesize cur;
- (instancetype)init
{
self = [super init];
if (self) {
NSLog(#"Yo, all works :D ");
}
return self;
}
-(id)initWithNumber:(int)num{
self = [super init];
if(self){
[self setCur:8] ;
}
return self;
}
#end
Note the #property int cur. I was excepting objective c to create a setCur and a getCur method as accessors and mutators for my class. However, when I run this:
arithmetic *test = [[arithmetic alloc] initWithNumber:89];
[test setCur:534];
NSLog("%i",[test getCur ]);
The first two lines work. But the last line says
No visible interface for arithmetic declares the selector 'getCur'
What is the problem ?

Answer 1

It is because when you declare like this in your #implementation:
#synthesize cur;
it will create getter
-(int)cur {
return _cur;
}
and also it will create a setter
-(void)setCur:(int)newCur {
_cur = newCur;
}
In summary, Objective-C getter/setter is having a pattern of propery/setPropery respectively, unlike Java that uses getProperty/setProperty.
And Objective-C getter/setter is accessed via dot(.) notation. For example
int x = obj.cur;
obj.cur = 100;