C++ vector存放数据

vector存放内置数据类型

#include
#include
#include
using namespace std;

void MyPrint(int val)
{
	cout << val << endl;
}
void test01()
{
	vector v; //创建一个vector容器

	v.push_back(10);
	v.push_back(20);
	v.push_back(30);
	v.push_back(40);
	v.push_back(50);

	vector::iterator itBegin = v.begin(); //起始迭代器   指向容器中第一个元素
	vector::iterator itEnd = v.end(); //结束迭代器  指向容器中最后一个元素的下一个位置
	
	//第一种遍历
	while (itBegin != itEnd)
	{
		cout << *itBegin << endl;
		itBegin++;
	}

	//第二种遍历
	for (vector::iterator it = v.begin();it != v.end();it++)
	{
		cout << *it << endl;
	}

	//第三种遍历
	for_each(v.begin(), v.end(), MyPrint);
}

int main()
{
	test01();
	system("pause");
	return 0;
}

vector存放自定义数据类型

#include
#include
#include
#include
using namespace std;

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

};

void test01()
{
	vectorv;
	Person p1("sa", 12);
	Person p2("ssa", 2);
	Person p3("sdda", 54);
	Person p4("sasda", 452);	
	Person p5("safafa", 882);

	v.push_back(p1);
	v.push_back(p2);
	v.push_back(p3);
	v.push_back(p4);
	v.push_back(p5);

	for (vector::iterator it = v.begin();it < v.end();it++)
	{
		cout << (*it).m_Name << " " << (*it).m_Age << endl;
	}

}


void test02()
{
	vectorv;
	Person p1("sa", 12);
	Person p2("ssa", 2);
	Person p3("sdda", 54);
	Person p4("sasda", 452);
	Person p5("safafa", 882);

	v.push_back(&p1);
	v.push_back(&p2);
	v.push_back(&p3);
	v.push_back(&p4);
	v.push_back(&p5);

	for (vector::iterator it = v.begin();it < v.end();it++)
	{
		cout << (*it)->m_Name << " " << (*it)->m_Age << endl;
	}
}

int main()
{
	test01();
	test02();
	system("pause");
	return 0;
}

vector 容器嵌套容器

#include
#include
using namespace std;




void test01()
{
	vector> v;

	vector v1;
	vector v2;
	vector v3;
	vector v4;
	vector v5;

	for (int i = 0;i < 5;i++)
	{
		v1.push_back(i + 1);
		v2.push_back(i + 2);
		v3.push_back(i + 3);
		v4.push_back(i + 4);
		v5.push_back(i + 5);
	}
	v.push_back(v1);
	v.push_back(v2);
	v.push_back(v3);
	v.push_back(v4);
	v.push_back(v5);

	for (vector>::iterator it = v.begin();it != v.end();it++)
	{
		for (vector::iterator cit = (*it).begin();cit != (*it).end();cit++)
		{
			cout << *cit << " ";
		}
		cout << endl;
	}

}

int main()
{
	test01();

	system("pause");
	return 0;
}