#include <iostream>

using namespace std;

class test_struct {
    public:
        int i;
        const int j;
};

int main() {
    cout << "Create a struct with int i = 100 and const int j = 101." << endl;
    test_struct test{100, 101};
    cout << test.i << endl;
    cout << test.j << endl;
    cout << "Create pointer p and point it to int i." << endl;
    int* p1 = &test.i;
    cout << *p1 << endl;
    cout << "Increment pointer p, which should now be pointing at const int j." << endl;
    p1++;
    cout << *p1 << endl;
    cout << "Dereference p and increment it." << endl;
    (*p1)++;
    cout << *p1 << endl;
    cout << test.j << endl;
}

Create a struct with int i = 100 and const int j = 101.
100
101
Create pointer p and point it to int i.
100
Increment pointer p, which should now be pointing at const int j.
101
Dereference p and increment it.
102
102