Construct Sensor Packet Placement

#include <iostream>
#include <cstdint>
#include <new>
#include <type_traits>
using namespace std;

// Write your struct and placement new logic here
struct SensorPacket
{
    int id,value;
};

int main() {
    int index, id, value;
    cin >> index >> id >> value;

    // Write your pool construction code here
    alignas(SensorPacket) uint8_t buffer[sizeof(SensorPacket) * 3];

    SensorPacket *obj[3];

    for(int i=0;i<3;i++)
    {
        obj[i] = new (buffer + i*sizeof(SensorPacket))SensorPacket{id,value};
    }

    cout << obj[index]->id<<" "<<obj[index]->value;

    for(int i=0;i<3;i++)
    {
        obj[i]->~SensorPacket();
    }

    return 0;
}

Solving Approach