C++ Primer 3.32

将上一题刚刚创建的数组拷贝给另外一个数组。利用vector重写程序，实现类似的功能

# include <iostream>
# include <vector>
# include <string>
using namespace std;
using std::vector;
int main()
{
	int arr[5] = { 1,2,3,4,5 };
	vector<int>v;
	for (auto i:arr)//数组也可以
		v.push_back(i);
	vector<int>v2 = v;
	for (auto a : v2)
		cout << a << endl;

	cout << endl;

	return 0;
}