#include <iostream.h>
int foo(int *p)
{  cout << p[0] << ' ' << p[1] << endl;
return(0);
}

int aa[] = {0,1,2,3};
float bb[] = {0.5,1.5,2.5,3.5};
typedef int (* FN)(void *);

main()
{  void *t, *r;
   t = aa;
   r = bb;
   ((FN)foo) (t);   // cast needed in C++ to pass void* to int*
}