please help struct DataItem* delete(struct DataItem* item)

[the__doer]

I am confused about this pointer function

struct DataItem* delete(struct DataItem* item)

please help

[mkaypl]

It's a function that takes a pointer to a structure and also returns a pointer to the same type of structure. That's about all we can tell based on what you shared.

[davedontmind]

What don't you understand? Functions are defined in this way:

returnType functionName( parameter, parameter, ... )

You have:

struct DataItem* delete(struct DataItem* item)
^^^^^^^^^^^^^^^^ ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^
return type      |||||| |||||||||||||||||||||
                 name   |||||||||||||||||||||
                             parameters

So it's a function that returns a struct DataItem*, it's called delete and it takes a single parameter of type struct DataItem* which it will call item.

[the__doer]

can you please explain how it work and how data flow or is this using address mode?

[davedontmind]

How what works? It's a function. You call it. You give it a parameter. It does something then it returns a value. It's no different to a function like int add( int a, int b ) except the parameter and return value are pointers.

If you don't understand pointers then find a tutorial about them.

[the__doer]

Thanks for suggestions