示例如下:
// Aa.cpp : Defines the entry point for the console application.
#include stdafx.h
#include <vector>
#include <map>
#include <iostream>
using namespace std;
int main(int argc, char* argv[])
{
printf(Hello World!\n);
vector<int> a; //创建一个对象
a.push_back(1);
a.push_back(2);
a.push_back(3);
v