Simple case of vector container

 Put the int type in the container in test01()

Put class objects in the container in test02()

Put the class object pointer in the container in test03()

The container is nested in test04().

#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
using namespace std;

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

void myPrint(Person p)	//回调函数
{
	cout<<"姓名："<< p.name << "年龄："<< p.age <<endl;
}

void myPrintPerson(int v)	//回调函数
{
	cout<<v<<endl;
}
void test01()
{
	vector<int> v;
	v.push_back(1);
	v.push_back(2);
	v.push_back(3);
	//遍历方法一
	vector<int>::iterator begin = v.begin();
	vector<int>::iterator end = v.end();
	while(begin!=end)
	{
		cout<<*(begin++)<<endl;
	}
	//遍历方法2
	for(vector<int>::iterator it = v.begin();it!=v.end();it++)
	{
		cout<<*it<<endl;
	}
	//遍历方法3
	for_each(v.begin(),v.end(),myPrintPerson);
}

void test02()
{
	vector<Person> v;
	Person p1("test01",11);
	Person p2("test02",12);
	Person p3("test03",13);
	v.push_back(p1);
	v.push_back(p2);
	v.push_back(p3);
	for(vector<Person>::iterator it = v.begin();it!=v.end();it++)
	{
		cout<<"姓名："<< (*it).name << "年龄："<< (*it).age <<endl;
	}
	//遍历方法3
	for_each(v.begin(),v.end(),myPrint);   //可以查看一下for_each函数定义
}

void test03()
{
	vector<Person*> v;
	Person p1("test01",11);
	Person p2("test02",12);
	Person p3("test03",13);
	v.push_back(&p1);
	v.push_back(&p2);
	v.push_back(&p3);
	for(vector<Person*>::iterator it = v.begin();it!=v.end();it++)
	{
		cout<<"姓名："<< (*it)->name << "年龄："<< (*it)->age <<endl;
	}
}

void test04()
{
	int i;
	/*容器嵌套容器*/
	vector<vector<int>> v;
	vector<int> v1;
	vector<int> v2;
	vector<int> v3;
	for(i=0; i < 3; 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 it = v.begin();it!=v.end();it++)
	{
		for(vector<int>::iterator vit = (*it).begin();vit!=(*it).end();vit++)
		{
			cout<<*vit<<' ' ;
		}
		cout<<endl;

	}

}

int main()
{
	//test01();	
	//test02();
	//test03();
	test04();
	return 0;
}