struct in c program

[kakaducsy]

Bellow code is c programing.

  struct NodeStruct
{
  int Base;
  int Value;
  void   (*pinMode)  (struct NodeStruct *node, int pin,int mode) ;
} ;

I don't understand about line :

  void   (*pinMode)  (struct NodeStruct *node, int pin,int mode) ;

What is it called?
Can you explain with an example?

[Duthomhas]

It is a pointer to a function.

https://www.newty.de/fpt/fpt.html

Hope this helps.

[kakaducsy]

Thanks Duthomhas