Convert binary array to hex string

strings.h

#pragma once

#include <windows.h>
#include <string>

// Converts a binary array to a hex string.
inline std::string bin2hex(unsigned char* buffer, int bufferSize)
{
	std::string hex;
	hex.reserve(bufferSize * 2 + 1);

	const char chars[] = "0123456789ABCDEF";

	for (int i = 0; i < bufferSize; i++)
	{
		unsigned char b = buffer[i];
		hex += chars[(b >> 4) & 0x0F];
		hex += chars[b & 0x0F];
	}

	return hex;
}