#include <iostream>
#include <cassert>

using namespace std;

//char nibble_to_hex(uint8_t i)
char nibble_to_hex(uint8_t i) //Conversion to hex format
{
    assert(0x0 <= i && i <= 0xf);
    //return "0123456789abcdef"[i];
    if (i < 10)
    {
        return i + '0';
    }
    else
    {
        return 'a' + (i - 10);
    }
}

uint8_t jun_nibble(uint8_t i) //Extracting the junior Nibble
{
    return i & 0x0f;
}

uint8_t sen_nibble(uint8_t i) //Extracting the senior Nibble
{
    return (i & 0xf0) >> 4;
}

void print_in_hex(uint8_t byte)
{
    //uint8_t upper_nibble = sen_nibble(byte);
    //uint8_t lower_nibble = jun_nibble(byte);
    //cout << nibble_to_hex(upper_nibble) << nibble_to_hex(lower_nibble) << endl;
    cout << nibble_to_hex(sen_nibble(byte)) << nibble_to_hex(jun_nibble(byte)) << endl;
}

int main()
{

    assert(nibble_to_hex(0x0) == '0');
    assert(nibble_to_hex(0x1) == '1');
    assert(nibble_to_hex(0x2) == '2');
    assert(nibble_to_hex(0x3) == '3');
    assert(nibble_to_hex(0x4) == '4');
    assert(nibble_to_hex(0x5) == '5');
    assert(nibble_to_hex(0x6) == '6');
    assert(nibble_to_hex(0x7) == '7');
    assert(nibble_to_hex(0x8) == '8');
    assert(nibble_to_hex(0x9) == '9');
    assert(nibble_to_hex(0xa) == 'a');
    assert(nibble_to_hex(0xb) == 'b');
    assert(nibble_to_hex(0xc) == 'c');
    assert(nibble_to_hex(0xd) == 'd');
    assert(nibble_to_hex(0xe) == 'e');
    assert(nibble_to_hex(0xf) == 'f');

    uint8_t byte = 0xce;

    //cout << "Jun: " << jun_nibble(byte) << endl;
    //cout << "Sen: " << sen_nibble(byte) << endl;

    print_in_hex(byte);

    cout << "Press any key for exit... ";
    cin.get();
    return 0;
}