Is it always valid?

Question

#include <iostream>

using namespace std;

struct ECC
{
    int a = 5;
    int b = 10;
    int c = 11;
};

int main()
{
    ECC A;
    int* aptr = &(A.a);
  
    cout << *aptr << endl;
    cout << *(aptr + 1) << endl;
    cout << *(aptr + 2) << endl; // The part where i'm interested in

    return 0;
}

Can this always be valid? In other words, Can the pointers strictly point the highlighted part?