Question

I have classA that has some variables declared in its .h file (arrays, strings, etc), and in its .m file it has methods that preform operations on these variables.

I am about to create classB, which is going to need all the same methods in its .m, and most of the same variables in its .h.

I have been doing reading but am still confused. I know I need to use inheritance, but I am not sure exactly how.

What I think I need to do:

classA.h

@interface classA{
NSMutableArray *myArray;
NSString *myString;
}

classA.m

#import classA.h
@implementation classA

-(void)displayArray{
for(int x = 0; count < [myArray count], x++){
NSLog(@"%@", [myArray objectAtIndex:x];
}

classB.h

#import "classA.h"
@interface classB{
}

classB.m

#import "classB.h"
#import "classA.m"
@implementation classB

-(void)viewDidLoad{
[self displayArray];
}

I want classB to have its own myArray and then when displayArray is called in classB, it would display classB’s myArray. And I need to repeat this for many more classes, but I am just trying to get it work with A and B right now.

Thanks.

---

Edit: I just made up this example, it is not the actual code.

Answer 1

it is simple as an 1×1 🙂

@interface classB : classA {

// ...

}

// ...

@end

and after it every instance of the classB has everything what the classA has.