是否可以在循環中自動聲明變量？ c＃

Question

我正在做我的學校作業。我有一個名爲「Person」的類，使用這個類時，用戶必須爲Person類的對象，他的姓氏等添加一個名稱。我在想，是否有可能在循環中自動定義變量？我有一個用戶輸入個人數據的循環。循環看起來是這樣的：

for (int n = 0; n < 20; n++) 
    { 
    Console.WriteLine("Input name of person no. {0}: ", n); 
    name = Console.ReadLine(); 
    Console.WriteLine("Input surname of person no. {0}", n); 
    surname = Console.ReadLine(); 

    Person pers+n = new Person(name, surname); 
    arr[n] = pers+n; 
    } 

所以聲明一個變量就像pers + n。我不知道如何在這個循環中反過來定義Person對象。謝謝！

Answer 1

可以使用

for (int n = 0; n < 20; n++) 
    { 
    Console.WriteLine("Input name of person no. {0}: ", n); 
    name = Console.ReadLine(); 
    Console.WriteLine("Input surname of person no. {0}", n); 
    surname = Console.ReadLine(); 

    Person pers = new Person(name, surname); 
    arr[n] = pers; 
    } 

Answer 2

添加類持有人的集合。

public class Persons: List<Person> {} 

和創建這個集合的Persons外循環的一個實例，然後在循環中添加的每個新Person到此集合。

Persons = new Persons(); 
for (int n = 0; n < 20; n++) 
{ 
    Console.WriteLine("Input name of person no. {0}: ", n); 
    name = Console.ReadLine(); 
    Console.WriteLine("Input surname of person no. {0}", n); 
    surname = Console.ReadLine(); 
    persons.Add(new Person(name, surname)); 
} 

集合中的各個Person對象可以像數組persons[index]

Answer 3

SimpleVar回答我的問題來訪問。謝謝！ 解決方案：

for (int n = 0; n < 20; n++) 
{ 
Console.WriteLine("Input name of person no. {0}: ", n); 
name = Console.ReadLine(); 
Console.WriteLine("Input surname of person no. {0}", n); 
surname = Console.ReadLine(); 

Person pers = new Person(name, surname); 
arr[n] = pers; 
} 

我

Answer 4

嘗試列表對象

  List<Person> people = new List<Person>(); 
     for (int n = 0; n < 20; n++) 
     { 
      Console.WriteLine("Input name of person no. {0}: ", n); 
      name = Console.ReadLine(); 
      Console.WriteLine("Input surname of person no. {0}", n); 
      surname = Console.ReadLine(); 

      Person newPerson = new Person(name, surname); 
      people.Add(newPerson); 
     }