Packet Buffer Alias

#include <iostream>
#include <cstdint>

using namespace std;

// 1. Create the alias for an array of 8 bytes:
using Packet = uint8_t[8];

int main() {

    Packet pk;

    // Read 
    for (int i = 0; i < 8; ++i){
        int x;
        cin >> x;
        pk[i] = static_cast<uint8_t>(x);
    }

    // Print
    for (int i = 0; i < 8; i++) {
        cout << static_cast<unsigned int>(pk[i]);
        if (i < 7)
            cout << " ";
    }

    return 0;
}

Solving Approach