Access private values outside class

Both private and public member variables reside in consecutive memory locations, so using pointer to member variable we can access private values even outside the class.

Take a look:

#include<iostream.h>
class A
{
public :
int x;

A()
{
cout<<"Enter a  b c:";
cin>>a>>b>>c;

}
private:
int a,b;
char c;
};
int main()
{
A ob,*p;
p=&ob;

int *y=&(p->x);  // y stores address of public member x

cout<<"\nInside main:\n";
cout<<"a="<<*++y;
cout<<"b="<<*++y;
cout<<"c="<<(char)*++y;
return 0;
}