Byte Buffer Indexing

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

// Define ByteBuffer class with operator[]
class ByteBuffer {
    private: 
        uint8_t data[8];
    
    public: 
        uint8_t& operator[](int index) {
            return data[index];
        }

        uint8_t operator[](int index) const {
            return data[index];
        }
}; 


int main() {
    ByteBuffer buffer;

    for (int i = 0; i < 8; i++) {
        int x;
        cin >> x;
        buffer[i] = x;
    }

    int idx, v;
    cin >> idx >> v;

    buffer[idx] = v;

    for (int i = 0; i < 8; i++) {
        cout << (int)buffer[i] << (i == 7 ? "" : " ");
    }

    return 0;
}

Solving Approach