C++t 提高教程 STL vector容器-vector基本概念

Posted 2021-10-31 行码阁119

 

 

 

 

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

void printVector(vector<int>& v)
{
	for (vector<int>::iterator it = v.begin(); it != v.end(); it++)
	{
		cout << *it << " ";
	}
	cout << endl;
}
void test01()
{
	vector<int>v1; //默认构造，无参构造
	for (int i = 0; i < 5; i++)
	{
		v1.push_back(i);
	}
	printVector(v1);

	//通过区间方式进行构造
	vector<int>v2(v1.begin(), v1.end());
	printVector(v2);

	//nh个elem方式构造
	vector<int>v3(10, 100);
	printVector(v3);

	//拷贝构造
	vector<int>v4(v3);
	printVector(v4);
}
int main()
{
	test01();
	system("pause");
	return 0;
}