#include<iostream>
using namespace std;

void Input(int &number)
{
	do
	{
		cout << "\nEnter number : ";
		cin >> number;
		if (number < 0)
			cout << "Xin moi ban nhap lai : " << endl;
	} while (number < 0);
}
void BinaryToHexadecimal(int number)
{
	int hexa[32] = { 0 }, dec = 0;
	int i = 1, j, rem;
	//binary to decimal
	while (number > 0)
	{
		rem = number % 2;
		dec = dec + (rem * i);
		number /= 10;
		i *= 2;
	}
	//decimal to hexa
	i = 0;
	while (dec != 0)
	{
		hexa[i] = dec % 16;
		dec /= 16;
		i++;
	}
	cout << "Hexa Decimal valua: ";
	for (j = i - 1; j >= 0; j--)
	{
		if (hexa[j] > 9)
			cout << char(hexa[j] + 55);
		else
			cout << hexa[j];
	}
	cout << endl;
	system("pause");
	return;
}
int main()
{
	int number;
	Input(number);
	BinaryToHexadecimal(number);
	system("pause");
	return 0;
}