problem in void pointer

[amitahlawat20]

I am facing a problem in void pointers in c++. Have a look at the following code:

#include<iostream.h>
int main()
{
	void *ptr;
	int x=3;
	float y=2.35f;
	char c='A';
	ptr=&x;
	cout<<endl<<*ptr; //line 1
	ptr=&y;
	cout<<endl<<*ptr;// line 2
	ptr=&c;
	cout<<endl<<*ptr;//line 3

	cout<<endl;
	return 0;
}

I am getting the errors of illegal indirection at line 1,2,3.Please help!!!

[bugmenot]

you cannot dereference a void pointer (what would you get? a void?) what are you trying to accomplish anyway?

[mitrmkar]

A short tutorial on pointers
http://www.cplusplus.com/doc/tutorial/pointers.html
Also pointers to void (i.e. void *) are discussed there ...

[Narue]

If you want to get to the data that a pointer to void points to, you need to cast it into the correct type first:

#include <iostream>

int main()
{
  using namespace std;

  int x = 3;
  float y = 2.35f;
  char c = 'A';
  void *ptr;

  ptr = &x;
  cout<< *static_cast<int*>(ptr) <<'\n';

  ptr = &y;
  cout<< *static_cast<float*>(ptr) <<'\n';

  ptr = &c;
  cout<< *static_cast<char*>(ptr) <<'\n';
}

[skatamatic]

I'm confused as to why you are using a void pointer. I don't think that that would ever be useful. Although I'm probably wrong...

[sahil_itprof]

Hello...

As such all are saying that your assignment is of no use, they are correct.....

But still if you want to clear the compiler hurdles, you can do one thing... Explicit type case all the things in your code...

Means write like this :
ptr=&x;
cout<