#include <iostream>
#include <string>
using namespace std;
enum Pnum
{
	eInt, eDouble,eString
};
// create prototype of the funciton 
void useVoidPointer (){}; 
void useVoidPointer (void* vptr1, Pnum pType);
int main ()
{
    int n1 = 12; double d1 = 24.25; 
     string str1 ="Hello World";
 	 useVoidPointer(&n1, eInt);
	 useVoidPointer(&str1, eString);
     useVoidPointer(&d1, eDouble);
    
  return 0;
}
void useVoidPointer (void* vptr1, Pnum pType)
{
  // uising switch
	switch(pType)
	{
	case eInt: 
		cout <<" eInt : " << *static_cast<int*>(vptr1) << endl;
	break;
	case eDouble: 
	cout <<" eDouble : " << *static_cast<double*>(vptr1) << endl;
	break;
	case eString: 
		cout <<" eString : "<< *static_cast<string*>(vptr1) << endl;
		break;
	/* explict switch condition will not enter default value
	 * default:
		cout<< " Value unknown"; 
		*/
	}
}