2023.5.14

#include <iostream>
using namespace std;
#include <vector>
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 < 10; i++)
    {
        v1.push_back(i);
    }
    printVector(v1);
    vector<int>v2(v1.begin(), v1.end());//通过区间方式进行构造
    printVector(v2);
    vector<int>v3(10, 100);//通过n个element的方式进行构造
    printVector(v3);
    if (v1.empty())
    {
        cout << "v1为空" << endl;
    }
    else
    {
        cout << "v1不为空" << endl;
    }
    cout << "v1的容量：" << v1.capacity() << endl;
    cout << "v1的大小：" << v1.size() << endl;
    v1.resize(20, 100);
    printVector(v1);
}

int main()
{
    test01();
    return 0;
}