Simple classes question

[Lucassergei]

I have 3 class in 3 files

//file1.h
typedef struct 
{
    int a;
    double b;
} A;

class B
{
   public:
       A*pA;
       void somefunc(int a){ pA->a=a;}
};


//file2.h

class C
{
public:
   B*pB;
   void somefunc(int b){pB->pA->b=b;}
};


//file 3
#include "file1.h"
#include "file2.h"
#include < iostream>
using namespace std;
int main()
{
   B rB;
   rB.somefunc(1);
   C rC;
   rC.somefunc(2);
   
   cout<<rC.pB->pA->a<<rC.pB->pA->b;
}

But this fails at cout unexpectedly

Someone offer me a helping hand please/////

Thank you