Thread: Function pointer of a function pointer with an argument

I'm trying to use a function pointer that is taking another function pointer with an argument. So f2() is the argument to the first function.

But I'm getting an error saying "error: lvalue required as unary ‘&’ operand".

Am I doing something that is'nt possible? Or how shall I implement this?

Code:

#include <stdio.h>
#include <stdlib.h>
 
typedef void(*funcPtr)(void(*ptr)(int));


void f1(void (*op)(int b))
{
    printf("%s() - \n", __func__);
    (*op)(b);
}

void f2(int b)
{
    printf("%s() - b: %d\n", __func__, b);
}


int main()
{
  funcPtr pF1 = NULL;
  pF1 = f1;
  pF1(&f2(5));

  return 0;
}

Yes, It's working. Thanks for the tip.