Memory allocation

[Summerson Goncalves]

Hello!!!

why the result is different...how the memory allocation was made ?

#include<iostream>
using namespace std;
struct teste{
              int numero;
              struct teste *ptr;
            };
int main(void)
{
   teste *p=new teste;
   cout<<"Endereco de p->ptr  "<<p->ptr;
   cin.get();
}

p->ptr =0 , if i put one more pointer: *ptr2, the result is different.

#include<iostream>
using namespace std;
struct teste{
              int numero;
              struct teste *ptr;
              struct teste *ptr2;  // here
       };
int main(void)
{
   teste *p=new teste;
   cout<<"Endereco de p->ptr  "<<p->ptr;
   cout<<"\nEndereco de p->ptr2 "<<p->ptr2; // here
   cin.get();
}

the pointer receive an address...?
(sorry my bad english...)

[Cubbi]

The pointers aren't initialized, they hold whatever values were in memory.
Use teste *p = new teste(); if you want them to be zeroed out. Or write a constructor.

[Summerson Goncalves]

but...the first result is zero "0".
the second result are two addresses....
the first pointer in the first code was zero...
the second should be the same result...or not ?

I just wanna learn how it works....can you explain ?

thanks...