读数组并保存。

#pragma warning(disable:4996)#include <stdio.h>#include <iostream>#include <fstream>//文件读取头文件#include <memory.h>#include <algorithm>#include <vector>//可变长数组using namespace std;int main(){fstream fin("E:\\test.txt");vector<int> vec;//若读入数据是double类型：vector<double> vec;if (fin){int a;while (fin >> a)vec.push_back(a); //将数据输入数组}for (auto it = vec.cbegin(); it != vec.cend(); it++)//边长数组的循环cout << *it << " ";cout << endl;system("pause");return 0;}/*键盘输入*/int main(){vector<int> vec;int a;while (cin >> a)vec.push_back(a);for (auto it = vec.cbegin(); it != vec.cend(); it++)cout << *it << " ";system("pause");return 0;}//待输入完毕，Ctrl+Z结束即可。