How to use typedef in nesting class?

[=?gb2312?B?w7fR08zO?=]

Hi,sir,please look at this code.
///////////////////////////////////////////////////
#include <iostream>

using namespace std;


class A{
private:
class B;//
public:
int out(int x){
return outB(x)->a;
}
B * outB(int x);
private:

B* root;
class B{
int a;
B(int init_a) :a(init_a){}
friend class A;
};

};

A::B* A:utB(int x){
root = new B(x);
return root;
}

int main(int argc, char *argv[])
{
A a1;
cout<<a1.out(8)<<endl;

}

//////////////////////////////////////////////////////////////////////////////////////
I want to use
"typedef A::B C;"
to make the code more readable.
But I don't know where should I put typedef?
Thank you very much!

 

[Mike Wahler]

Hi,sir,please look at this code.
///////////////////////////////////////////////////
#include <iostream>

using namespace std;


class A{
private:
class B;//
public:
int out(int x){
return outB(x)->a;
}
B * outB(int x);
private:

B* root;
class B{
int a;
B(int init_a) :a(init_a){}
friend class A;
};

};

A::B* A:utB(int x){
root = new B(x);
return root;
}

int main(int argc, char *argv[])
{
A a1;
cout<<a1.out(8)<<endl;

}

//////////////////////////////////////////////////////////////////////////////////////
I want to use
"typedef A::B C;"
to make the code more readable.
But I don't know where should I put typedef?

Put it in the scope(s) where you intend to use it.

-Mike

 

[A Loser]

Hi,sir,please look at this code.
///////////////////////////////////////////////////
#include <iostream>

using namespace std;

class A{
private:
class B;//
public:
int out(int x){
return outB(x)->a;
}
B * outB(int x);
private:

B* root;
class B{
int a;
B(int init_a) :a(init_a){}
friend class A;
};

A::B* A:utB(int x){
root = new B(x);
return root;
}

int main(int argc, char *argv[])
{
A a1;
cout<<a1.out(8)<<endl;

}

///////////////////////////////////////////////////////////////////////////­///////////
I want to use
"typedef A::B C;"
to make the code more readable.
But I don't know where should I put typedef?

Put it in the scope(s) where you intend to use it.

-Mike- -

Thank you!