vector向量容器的一些基本操作

#include <vector>

#include <iostream>

using namespace std;

void print(vector<int>& v)//打印函数

{

	cout<<"-----------------------------------------------------"<<endl;

	cout<<"empty = "<<v.empty()<<endl;

	cout<<"size = "<<v.size()<<endl;

	cout<<"max_size = "<<v.max_size()<<endl;

	cout<<"capacity = "<<v.capacity()<<endl;

}

void reverse_print(vector<int>& v)//反向遍历vector元素

{

	vector<int>::reverse_iterator ri , riend;

	riend = v.rend();

	for (ri = v.rbegin();ri!=riend;ri++)

	{

		cout<<*ri<<endl;

	}

}

int main()

{

	vector<int> v;

	print(v);

	//添加5个元素

	v.push_back(1);

	v.push_back(2);

	v.push_back(3);

	v.push_back(4);

	v.push_back(5);

	print(v);

	// 再添加4个元素

	v.push_back(6);

	v.push_back(7);

	v.push_back(8);

	v.push_back(9);

	print(v);

	//调整vector数据空间大小

	v.reserve(40);

	print(v);

	reverse_print(v);

	getchar();

	return 0;

}

巴特西

vector向量容器的一些基本操作

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