lambda表达式初步

代码语言：javascript复制

// 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;
}

lambda

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