📜  C#中的bool关键字

📅  最后修改于: 2021-05-29 20:21:51             🧑  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。 bool是用于声明可以存储布尔值true或false的变量的关键字。它是System.Boolean的别名。

布尔关键字在内存中占用1个字节(8位)。 bool只有两个可能的值,即truefalse

句法:

bool variable_name = value;

例子:

Input: true

Output: answer: False
        Size of a byte variable: 1

Input: false

Output: Type of answer: System.Boolean
        answer: True
        Size of a bool variable: 1

范例1:

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

输出:

answer: False
Size of a bool variable: 1

范例2:

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

输出:

Type of answer: System.Boolean
answer: True
Size of a bool variable: 1