C++. Error: void is not a pointer-to-object type

Question

I have a C++ program:

struct arguments
{
  int a, b, c;  
  arguments(): a(3), b(6), c(9) {}
};

class test_class{
  public:

    void *member_func(void *arg         


        

Answer 1

The problem as bdonlan said is "dereferencing void* before casting".

I think this example would help:

#include 

using namespace std;

int main()
{



   void *sad;
   int s = 23;
   float d = 5.8;

   sad = &s;
   cout << *(int*) sad;//outputs 23//wrong: cout << *sad ;//wrong: cout << (int*) *sad;



   sad = &d;
   cout << *(float *) sad;//outputs 5.8//wrong: cout << *sad ;//wrong: cout << (float*) *sad;

   return 0;
}