#include <iostream>
using namespace std;

int LinearSearch(const int *Array, const int Size, const int ValToSearch)
{
	bool NotFound = true;
	int i = 0;

	while(i < Size && NotFound)
	{
		if(ValToSearch != Array[i])
			i++;
		else
			NotFound = false;
	}

	if( NotFound == false )
		return i;
	else
		return -1;
}

int main()
{
	int Number[] = { 67, 278, 463, 2, 4683, 812, 236, 38 };
	int Quantity = sizeof(Number) / sizeof(int);
	int NumberToSearch = 0;

	cout << "Enter the number to search: "; cin >> NumberToSearch;
	int i = LinearSearch(Number, Quantity, NumberToSearch);

	if(i == -1)
		cout << NumberToSearch << " was not found in the collection\n\n";
	else
	{
		cout << NumberToSearch << " is at the " << i+1;

		if( i == 0 )
			cout<< "st position of the collection\n\n";
		else if( i == 1 )
			cout<< "nd position of the collection\n\n";
		else if( i == 2 )
			cout<< "rd position of the collection\n\n";
		else
			cout<< "th position of the collection\n\n";
	}

	return 0;
}

Here is an example of running the program:

Enter the number to search: 278

278 is at the 2nd position of the collection

Press any key to continue

Here is another example of running the program:

Enter the number to search: 288

288 was not found in the collection

Press any key to continue