this pointer in struct's constructor

[carlossentino]

Hello,
We read in the books that the struct in C++ is almost the same as the class except in the access specifiers where the default in class is private but the default in struct is public.
In a class, if the name of the constructor's argument is the same as the instance variable, we can do:

class A {
public:
int x;
A(int x) {this ->x = x;}};

My question is, why this pointer does not work in struct? For example, the code below does not work.

struct A {
int x;
A(int x) {this ->x = x;}};

[LB]

I don't believe you. http://ideone.com/FMHVbN

Consider also http://ideone.com/wVRaTa

[carlossentino]

You are right. Thank you !!
I am not sure what was going on.