Question

i read about stack and heap
but i don’t know about this

where is x ( in heap or in stack ) ?
is my code have a memory leak or not ?

struct st
{
    int x;
    int* y;
};

st* stp;

void func()
{
    st* s=new st();

    s->x=2;
    s->y=new int(5);

    stp=s;
}

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{

    func();

    cout << stp->x << "  " << *stp->y <<endl;

    delete stp->y;
    delete stp;
}

output
2 5

Answer 1

stp is dynamically-allocated, and is therefore on the heap.^* Therefore, all its members (including x) are on the heap.

As far as I can see, you don’t have a memory leak.

---

_{* Technically, the C++ standard doesn’t talk about stack vs. heap, so it’s up to the compiler where stuff gets allocated. But in practice, it will be stored in a heap-like structure.}