C# 程序不使用写线打印 Hello World】
原文:https://www . geesforgeks . org/c-sharp-program-to-print-hello-world-无需使用-writeline/
Hello World 程序是任何编程语言中最基础的程序。它在屏幕上打印“你好世界”。在本文中，我们将显示“你好世界”，而不使用写线方法。所以做这个任务我们用以下方法:
- Console. Open standard output ( ): This method is used to obtain the standard output stream.
- Console. Read key () : This method is used to get the next character pressed by the user, which will be displayed in the console window.
- BeginWrite (): This method is used to start an asynchronous write operation.
异步等待处理。WaitOne():
为了编写 Hello World，我们以 ASCII 格式获取每个单独的字符，然后将这些字符一起显示。
| **弦** | H | e | l | l | o | | W | o | r | l | d | | ascii 码 | seventy-two | One hundred and one | One hundred and eight | One hundred and eight | One hundred and eleven | Thirty-two | Eighty-seven | One hundred and eleven | One hundred and fourteen | One hundred and eight | One hundred |方法
1。内部 if 条件，写 OpenStandardOutput()显示 Hello World。
2。这个方法后面跟一个 BeginWrite()方法，取整数 Bytes。
BeginWrite(new byte[] { 072, 101, 108, 108, 111, 032, 087, 111,
114, 108, 100, 0 }, 0, 12, null, null)
3。最后我们用的是 AsyncWaitHandle。WaitOne()方法后跟 BeginWrite()方法。
BeginWrite(new byte[] { 072, 101, 108, 108, 111, 032, 087, 111,
114, 108, 100, 0 }, 0, 12, null,
null).AsyncWaitHandle.WaitOne())
例:
c
// C# program to display Hello World without
// using WriteLine() method
using System;
class GFG{
static void Main(string[] args)
{
// ASCII values for Hello World
if (System.Console.OpenStandardOutput().BeginWrite(new byte[] {
072, 101, 108, 108, 111, 032, 087, 111, 114, 108, 100, 0 },
0, 12, null, null).AsyncWaitHandle.WaitOne())
{
}
}
}
输出 :
Hello World
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