lambda表达式初步

// Lambda_test20140801.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;

int main()
{
	//创建一个包含10个元素的集合对象
	vector<int> v;

	for (int i = 0; i < 10; ++i)
	{
		v.push_back(i);
	}

	//使用for_each 语句和lambda表达式来实现对偶元素的计数

	int evenCount = 0;
	for_each(v.begin(),v.end(),[&evenCount](int n){

		cout<<n;

		if (n % 2 == 0)
		{
			cout<<" is even"<<endl;

			//increment the counter
			evenCount++;

		}
		else
		{
			cout<<" is odd"<<endl;

		}

	});

	//将偶元素个数打印出来
	cout<<"There are "<<evenCount<<" even numbers in the vector"<<endl;

	getchar();

	return 0;
}