C function vs. Objective-C method?

Question

What is the difference between the two? If I\'m writing a program, when would I need a this:

void aFunction() {
    //do something
}

and wh

Answer 1

In Objective-C each function operates on an object, like

[myObject myFunction]

A C method has the form:

return-type function-name(argument1, argument2, etc) {}

An Objective-C instance method has the form:

-(return-type)function-name:argument1 {}

or for a multi-argument function

-(return-type)function-name:argument1 function-name:argument2 {}

I always use Objective-C-style methods in Obj-C programming, even though you can still use C-type functions as well.

I suppose the equivalent in C to [myObject myMethod:arg] might be myObject.myMethod(arg)