C++：vector容器遍历方式

  首先，欢迎并感谢博友进行知识补充与修正。

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>

using namespace std;


//迭代器三种遍历方式
void Myprint(int e)		//回调函数
{
	cout << e << endl;
}

void test01()
{
	vector<int> v = { 1, 2, 3, 4, 5 };
	vector<int>::iterator itBegin = v.begin();
	vector<int>::iterator itEnd = v.end();
	while (itBegin != itEnd)
	{
		cout << *(itBegin++) << endl;
	}
}

void test02()
{
	vector<int> v = { 1, 2, 3, 4, 5 };
	for (vector<int>::iterator it=v.begin();it!=v.end();it++)
	{
		cout << *it << endl;
	}
}

void test03()
{
	vector<int> v = { 1, 2, 3, 4, 5 };
	for_each(v.begin(), v.end(), Myprint);
}


class Person
{
public:
	Person(string name, int age)
	{
		this->m_name = name;
		this->m_age = age;
	}
	string m_name;
	int m_age;
};

//自定义数据类型容器
void test04()
{
	Person p1("大头儿子", 8);
	Person p2("小头爸爸", 30);
	Person p3("围裙妈妈", 28);
	Person p4("隔壁老王", 32);

	vector<Person> v;
	v.push_back(p1);
	v.push_back(p2);
	v.push_back(p3);
	v.push_back(p4);

	for (vector<Person> ::iterator it = v.begin(); it != v.end(); it++)		//(*it)指<>内部数据  此处即为Person
	{
		cout << "名字：" << (*it).m_name <<"  "<< "年龄：" << it->m_age << endl;
	}
}
//自定义指针数据类型容器

void test05()
{
	Person p1("大头儿子", 8);
	Person p2("小头爸爸", 30);
	Person p3("围裙妈妈", 28);
	Person p4("隔壁老王", 32);

	vector<Person*> v;
	v.push_back(&p1);
	v.push_back(&p2);
	v.push_back(&p3);
	v.push_back(&p4);

	for (vector<Person*> ::iterator it = v.begin(); it != v.end(); it++)	//*it 指 Person*
	{
		cout << "名字：" << (*(*it)).m_name <<"  "<< "年龄：" << (*it)->m_age << endl;
	}
}

//嵌套容器
void test06()
{
	vector<vector<int>> v;
	vector<int> v1;
	vector<int> v2;
	vector<int> v3;

	for (int i = 0; i < 5; i++)
	{
		v1.push_back(i);
		v2.push_back(i + 10);
		v3.push_back(i + 100);
	}

	v.push_back(v1);
	v.push_back(v2);
	v.push_back(v3);

	for (vector<vector<int>> ::iterator vit = v.begin(); vit != v.end(); vit++)		//*vit 为vector<int>类型
	{
		for (vector<int> ::iterator it = (*vit).begin(); it != (*vit).end(); it++)
		{
			cout << *it << " ";
		}
		cout << endl;
	}
}

//第四种遍历方法  C++11新特性： 范围for语句
void test07()
{
	vector<int> v = { 1, 2, 3, 4, 5 };

	for (auto e : v)
	{
		cout << e << " ";
	}
	cout << endl;

	for (auto &e : v)
	{
		e *= 2;
	}

	for (auto e : v)
	{
		cout << e << " ";
	}
	cout << endl;
}
int main()
{
	test07();
	system("pause");
}