#include <algorithm>

#include <iostream>

using namespace std; 



class Even

{	public:	// alternatively, a template member function could have been used	

		bool operator()(const int number) { return (!(number%2));	}

};



void main()

{

	int array[] = {3,5,7,6,5,4,2}, *retPtr;

	

	// make call to find_if using pointers to beginning and one past the end of array and an object of type Even

	retPtr = find_if(array, &array[sizeof(array)/sizeof(int)+1], Even());

	

	if (retPtr != &array[sizeof(array)/sizeof(int)])	// if return value was not a past-the-end pointer

	{	cout << *retPtr;	}

}