this is 我做的好van的东西

#include<iostream>
using namespace std;
const int maxn = 114514;
struct user{
	string name;
	int dengji;
}users[maxn];
int main()
{
	int n , x;
	cout << "请输入注册用户的数量：";
	cin >> n;
	for(int i = 1;i <= n;i++)
	{
		cout << i << "号用户名字：";
		cin >> users[i].name;
		cout << i << "号用户等级：";
		cin >> users[i].dengji;
	}
	string caozuo;
	while(true)
	{
		cout << "是否退出（是请输入1，否请输入0）：";
		cin >> caozuo;
		if(caozuo == "1")
		{
			return 0;
		}
		cout << "请输入查询用户的号码：";
		cin >> x;
		if(x > n)
		{
			cout << "不存在该用户！" << endl;
			continue;
		} 
		cout << "该用户名为：" << users[x].name << endl;
		cout << "该用户等级为：" << users[x].dengji << endl;
	}
}

这个这个这个……还有这个！

#include<bits/stdc++.h>
using namespace std;
struct student{
	string name;//名字
	int number;//学号
	int Chinese_score;//语文成绩
	int maths_score;//数学成绩
	int English_score;//英语成绩
	int total_score;//总成绩
}students[114514];
int main()
{
	int n;
	cout << "请输入考生数量：";
	cin >> n;
	for(int i = 1;i <= n;i++)
	{
		cout << "请输入" << i << "号考生名字：";
		cin >> students[i].name;
		cout << "请输入" << i << "号考生学号：";
		cin >> students[i].number;
		cout << "请输入" << i << "号考生语文、数学和英语成绩（中间用空格隔开）：";
		cin >> students[i].Chinese_score >> students[i].maths_score >> students[i].English_score;
		students[i].total_score = students[i].Chinese_score + students[i].maths_score + students[i].English_score;
	}
	while(1)
	{
		int caozuo , x;
		cout << "请输入操作（1为退出，其他数字为继续）：";
		cin >> caozuo;
		if(caozuo == 1)
		{
			return 0;
		}
		cout << "请输入要查询的考生编号：";
		cin >> x;
		if(x > n)
		{
			cout << "不存在此考生！" << endl;
			continue;
		}
		cout << "---------------------" << endl;
		cout << "该考生名字：" << students[x].name << endl;
		cout << "该考生学号：" << students[x].number << endl;
		cout << "该考生的语文成绩：" << students[x].Chinese_score << endl;
		cout << "该考生的数学成绩：" << students[x].maths_score << endl;
		cout << "该考生的英语成绩：" << students[x].English_score << endl;
		cout << "该考生总成绩：" << students[x].total_score << endl;
		cout << "---------------------" << endl;
	}
	return 0;
}