📜  C#中的char关键字

📅  最后修改于: 2021-05-29 13:44:54             🧑  作者: Mango

关键字是用于某些内部过程或表示某些预定义动作的语言中的单词。 char是用于声明变量的关键字,该变量存储从+ U0000到U + FFFF范围内的字符值。它是System.Char的别名。

句法:

char variable_name = value;

char关键字在内存中占用2个字节(16位)。

例子:

Input: S

Output: chr: S
        Size of a char variable: 2 

Input: G

Output: Type of chr: System.Char
        chr: G
        Size of a char variable: 2

范例1:

// C# program for char keyword
using System;
using System.Text;
  
class GFG {
  
    static void Main(string[] args)
    {
        // char variable declaration
        char chr = 'S';
  
        // to print value
        Console.WriteLine("chr: " + chr);
  
        // to print the size of a char
        Console.WriteLine("Size of a char variable: " + sizeof(char));
    }
}

输出:

chr: S
Size of a char variable: 2

范例2:

// C# program for char keyword
using System;
using System.Text;
  
namespace geeks {
  
class GFG {
  
    static void Main(string[] args)
    {
        // char variable declaration
        char chr = 'G';
  
        // to print the type of variable
        Console.WriteLine("Type of chr: " + chr.GetType());
  
        // to print value
        Console.WriteLine("chr: " + chr);
  
        // to print size of a char
        Console.WriteLine("Size of a char variable: " + sizeof(char));
  
        // hit ENTER to exit
        Console.ReadLine();
    }
}
}

输出:

Type of chr: System.Char
chr: G
Size of a char variable: 2

范例3:

// C# program for char keyword
using System;
using System.Text;
  
class GFG {
  
    static void Main(string[] args)
    {
        // char variable declaration
        char chr = 'Geeks';
  
        // to print value
        Console.WriteLine("chr: " + chr);
  
        // to print size of a char
        Console.WriteLine("Size of a char variable: " + sizeof(char));
    }
}

错误: