searching and sorting arrays... plus bool validation

[madelineosman]

so i'm supposed to create a program where a user enters a lottery number and it searches the array of lottery numbers to see if they're a match.
i want to know how to display the results of the search in the way my teacher wants, which is that lottery number validation is to be performed in a function that takes two parameters: the winning lotto numbers array and input lottery number. she wants the function to return a boolean value for true if its a winner, and false if it isn't. help? here's what i've got to work with so far.

//Include Files
#include <iostream>
#include <iomanip>
using namespace std;

//Function Prototypes
int getlottoNum();
int binarySearch(int [], int, int);
bool isWinner(int);
void displayNum();

//Main Line

int main()
{
	const int SIZE = 10;
	int win[SIZE] = {13579, 26791, 26792, 33445, 55555, 62483, 77777, 79422, 85647, 93121};

	int lottoNum;
	int results;
	int index;

	do
	{
		//Ask user for lottery number
		lottoNum = getlottoNum();

		//Search for lottery number
		index = int binarySearch(int list[], int numElems, int value);
		
		//Display search results

	}

	//Validate - BOOL
	isWinner(win[], lottoNum);


	//Sort Numbers & print

	return 0;

}

//Function Declarations

int getlottoNum()
{
	int lottoNum;
	cout << "What is your choice for this weeks winning lottery number?" << endl;
	cin >> lottoNum;
	return lottoNum;
}

int binarySearch(int array[], int numElems, int value)
{
	int first = 0,
		last = numElems - 1,
		middle,
		position = -1;
	bool found = false;

	while (!found && first <= last)
	{
		middle = (first + last) / 2;
		if (array[middle] == value)
		{
			found = true;
			position = middle;
		}
		else if (array[middle] > value)
			last = middle - 1;
		else
			first = middle + 1;
	}
	return position;

bool isWinner(int win[], )
{
	bool status;

	if (lottoNum)
		status = true; //winner
	else
		status = false;
	return status;
}

//Program Output