Find the first even number in the collection : vector find « vector « C++ Tutorial

1. C++ Tutorial
2. vector
3. vector find

#include <algorithm>
#include <vector>
#include <iostream>
using namespace std;
template <typename elementType>
bool IsEven (const elementType& number)
{
    return ((number % 2) == 0);
}

int main ()
{
    vector <int> v;

    for (int nNum = -9; nNum < 10; ++ nNum)
        v.push_back (nNum);

    vector <int>::const_iterator i;
    for ( i = v.begin (); i != v.end (); ++ i )
        cout << *i << ' ';

    cout << v.size () << "' elements" << endl;

    // Find the first even number in the collection
    vector <int>::iterator iEvenNumber;
    iEvenNumber = find_if ( v.begin ()// Start of range
                          , v.end ()  // End of range
                          , IsEven <int> );     // Unary Predicate

    if (iEvenNumber != v.end ())
    {
        cout << "Number '" << *iEvenNumber << "' found at position [";
        cout << distance (v.begin (), iEvenNumber);
        cout << "]" << endl;
       }

    return 0;
}