Question

In the below code what does “a” and “&a” contains?

class list{
};
int main(){
    list *a= new list();
    cout<<"\n Values:a="<<a<<" & &a="<<&a<<endl;
    return 0;
}

Answer 1

a is a pointer to the object list which is allocated on heap.
basically a contains an address(pointer stores an address,if you are aware).
And &a does not contain anything.what you are doing is actually taking the address of that pointer and printing it.