Byte Splitter Union

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

// Define a union named ByteSplitter with:
// uint16_t word
// uint8_t bytes[2]

union ByteSplitter{
    uint16_t word;
    uint8_t bytes[2];
};

int main() {
    uint16_t val;
    cin >> val;

    ByteSplitter u;
    u.word = val;

    cout << "LSB=" << (int)u.bytes[0] << " MSB=" << (int)u.bytes[1];
    return 0;
}

Solving Approach