A problem detection C++ object memory management, thoroughly learn C++ memory layout

Object Memory Management

#include <iostream>
using namespace std;

struct Person
{
	int m_id;
	int m_age;
	int m_height;
	void display(a) {
		cout << "m_id = " << m_id
			<< ",m_age = " << m_age
			<< ",m_height = "<< m_height << endl; }};int main(a) {
	Person person;
	person.m_id = 10;
	person.m_age = 20;
	person.m_height = 30;

	Person* p  = (Person * )&person.m_age;
	p->m_id = 40;
	p->m_age = 50;
	person.display(a);return 0;
}
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May I ask the final print result?