Question

How do you invoke something like this from C/C++ etc:

Implementation:

int foo(int a, int b)
{
    a += b;
    return a;
}

Call:

int newNumber = foo(1,2);

I think know this part:

Implementation:

-(int) foo: (int)a addTo: (int)b
{
    a += b;
    return a;
}

Call: ???

But how do you call this method in another method of the same class and retrieve that a?

I apologize in advance is this is blatantly in documentation or in another question – guess I need a little extra help. : /

Answer 1

Objective C methods are called on a class instance (as in your case) or on class, like this:

int res = [self foo:1 addTo:2];

Or if it is a method of other object:

int res = [theObject foo:1 addTo:2];