strange struct and typedef definition

Question

I came across this struct declaration and I do not now what is the last pointer doing here?

typedef const struct
{
   //Ommiting the members for stackoverflow!!!

} PWMnCurrFdbkParams_t, *pPWMnCurrFdbkParams_t;

So the question is

what is the effect of , here?
what is type of*pPWMnCurrFdbkParams_t
what usecase there is to it?

Have a look at: [https://stackoverflow.com/questions/1543713/c-typedef-of-pointer-to-structure](https://stackoverflow.com/questions/1543713/c-typedef-of-pointer-to-structure) Hope this helps. — RoT, Jul 28 '18 at 14:42

score 2 · Accepted Answer · answered Jul 28 '18 at 14:43

This is quite common, for example Microsoft use it a lot in their header files.

There are two types (comma separated) defined here, PWMnCurrFdbkParams_t is of type const struct and pPWMnCurrFdbkParams_t is a pointer to that const struct.

The * is not part of the name, just as int *x is where x is a pointer to an int.

Use case is almost any collection of structures, like a linked list or tree.

strange struct and typedef definition

1 Answers1