代码为C++11 代码如下

#include<bits/stdc++.h>
#include<vector>
using namespace std;
int main(){
	vector<int>v;
	v.push_back(1);
	v.push_back(2);
	v.push_back(2);
	v.push_back(3);
	for(auto i:v){
		cout<<v[i]<<" ";
	}

	
	return 0;
}

输出结果如下

2 2 2 3
--------------------------------
Process exited after 0.06266 seconds with return value 0
请按任意键继续. . .

理想结果：

1 2 2 3