// Code from http://msdn.microsoft.com/en-us/library/dd293608.aspx, adapted to use Apple's blocks extension
#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
int main()
{
// Create a vector object that contains 10 elements.
vector<int> v;
for (int i = 0; i < 10; ++i) {
v.push_back(i);
}
// Count the number of even numbers in the vector by
// using the for_each function and a lambda expression.
__block int evenCount = 0;
for_each(v.begin(), v.end(), ^(int n) {
cout << n;
if (n % 2 == 0)
{
cout << " is even " << endl;
// Increment the counter.
evenCount++;
}
else
{
cout << " is odd " << endl;
}
});
// Print the count of even numbers to the console.
cout << "There are " << evenCount
<< " even numbers in the vector." << endl;
}