C#入门：在cmd显示字符

hello.cs

using System;

class Program {
    static void Main() {
        Console.WriteLine("Hello, World!");
    }
}

编译

C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc /target:exe /out:hello.exe hello.cs

运行

hello

显示

Hello, World!

显示.NET版本

Console.WriteLine(Environment.Version.ToString());