Async function call in C++ with future library

Async callback functions in C++

// async example
#include <iostream>       
#include <future>        


using namespace std;


void Init(int Array[], int Size)
{
	for (int i = 0; i < Size; i++)
	{
		Array[i] = i + 1;
	}
}

bool Sorting(int Array[],const int length) 
{
	std::cout << "Calculating. Please, wait...\n";
	
	for (int i = 0; i < length; i++)
	{
		for (int j = i+1; j < length; j++)
		{
			if (Array[i] > Array[j])
			{
				int tmp = Array[i];
				Array[i] = Array[j];
				Array[j] = tmp;
			}
		}
	}

	return true;
}

int main()
{


	const int Size = 100000;
	int Array[Size];

	Init(Array, Size);
	
	// call Sorting() function asynchronously:
	std::future<bool> fut = std::async(Sorting,Array,Size);

	std::cout << "Sorting the Array...." << endl;


	for (int i = 0; i < 10000; i++)
	{
		cout << Array[i] << endl;
	}


	bool ret = fut.get();


	if (ret) 
		std::cout << "It is done !\n";
	else 
		std::cout << "It is not done.\n";




	return 0;
}