#include <iostream>

using namespace std;

struct Bin
{
    unsigned int b0 : 1;
    unsigned int b1 : 1;
    unsigned int b2 : 1;
    unsigned int b3 : 1;
    unsigned int b4 : 1;
    unsigned int b5 : 1;
    unsigned int b6 : 1;
    unsigned int b7 : 1;
};

struct Hex
{
    unsigned int h0 : 4;
    unsigned int h1 : 4;
};

struct Oct
{
    unsigned int o0 : 3;
    unsigned int o1 : 3;
    unsigned int o2 : 3;
};

union MyByte
{
private:
    Bin bin;
    Hex hex;
    Oct oct;
    unsigned char data;

public:
    MyByte(unsigned char byte) : data(byte) {}
    void PrintBin()
    {
        cout << bin.b7 <<
                bin.b6 <<
                bin.b5 <<
                bin.b4 <<
                bin.b3 <<
                bin.b2 <<
                bin.b1 <<
                bin.b0 << endl;
    }
    void PrintHex()
    {
        //std::hex - переключение в 16-тиричную запись
        cout << std::hex << hex.h1 << hex.h0 << endl;
        cout << std::dec; // переключаемся в режим десятичной записи
    };
    void PrintOct()
    {
        cout << std::oct << oct.o0 << oct.o1 << oct.o2 << endl;
        cout << std::dec;
    }
};

int main()
{
    MyByte byte(0xF0);
    byte.PrintBin();
    byte.PrintHex();
    byte.PrintOct();
    return 0;
}