struct object same name as data name

I have come across code like this :

struct abc
{
    //some code
};

//some lines of code

struct abc *abc;

I have a couple of questions:

1. Is there an advantage to this usage?

2. Does the compiler interpret it d开发者_如何学编程ifferently from:

   struct abc *diffname;
   

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There is nothing special about giving a variable a name similar to its type name. For native types, it's impossible, since the type names are all reserved. For your case of structures, however,

struct abc *abc;

and

struct abc *diffname;

are exactly the same, except that they have different names. I don't see any particular "advantage" to using the abc.