如何在文本字段中显示小数?

发布于 2024-10-09 18:42:53 字数 407 浏览 0 评论 0原文

我正在创建一个简单的控制台应用程序,它显示 PI 的值,最多可达一定的小数位数。现在,我编写了以下代码:

namespace PIApplication
{
  static void Main()
  {
    decimal Pi = Math.PI;
    Console.Writeline("Pi is {0}.", PI);
  }
}

我使用 {0} 的原因是我知道此方法在涉及布尔值时有效,但我只能假设 0 应该更改为其他值别的。有人能解释一下这在我的情况下是如何运作的吗?

此外,我收到一个错误,系统无法将双精度型转换为十进制型。我假设这是指定义为 PI 的值。我需要做什么才能将其从一种类型转换为另一种类型?我还必须这样做吗?

预先感谢您的所有帮助。

I am creating a simple console application that shows the value of PI up to a certain number of decimals. For now, I have written the following code:

namespace PIApplication
{
  static void Main()
  {
    decimal Pi = Math.PI;
    Console.Writeline("Pi is {0}.", PI);
  }
}

The reason I used {0} is that I know that this method works when it comes to Booleans but I can only assume that the 0 should be changed to something else. Can someone explain how this would work in my case?

Furthermore, I am getting an error that the system can not convert type double to decimal. I assume that this refers to the value that is defined as PI. What would I have to do to convert it from one type to the other? Do I even have to?

Thanks in advance for all the help.

如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。

扫码二维码加入Web技术交流群

发布评论

需要 登录 才能够评论, 你可以免费 注册 一个本站的账号。

评论(3

别再吹冷风 2024-10-16 18:42:53

这是在 System.Math 中定义常量 PI 的方式:

public const double PI = 3.14159 

尝试:

    static void Main(string[] args)
    {
        double Pi = Math.PI; 
        Console.WriteLine("Pi is {0}.", Pi); 
    }

小数:与浮点类型相比,小数类型具有更高的精度和更小的范围,这使得它适合金融和金融领域货币计算。

This is how the constant PI is defined in System.Math:

public const double PI = 3.14159 

Try:

    static void Main(string[] args)
    {
        double Pi = Math.PI; 
        Console.WriteLine("Pi is {0}.", Pi); 
    }

Decimal: Compared to floating-point types, the decimal type has a greater precision and a smaller range, which makes it suitable for financial and monetary calculations.

-黛色若梦 2024-10-16 18:42:53

不需要存储 PI,除非你想以给定的精度存储它。

int givenPrecision = 10;
Console.WriteLine("Pi is {0}.", Math.PI.ToString("0." + new String('#', givenPrecision)));

这将给出 3.1415926536。

No need to store PI, unless you want to store it at a given precision.

int givenPrecision = 10;
Console.WriteLine("Pi is {0}.", Math.PI.ToString("0." + new String('#', givenPrecision)));

This will give 3.1415926536.

断念 2024-10-16 18:42:53

显式转换??

 namespace PIApplication{
  static void Main()
  {
    decimal Pi = (decimal)Math.PI;
    Console.Writeline("Pi is {0}.", Pi);
  }
}

强调文字

Explicitly convert??

 namespace PIApplication{
  static void Main()
  {
    decimal Pi = (decimal)Math.PI;
    Console.Writeline("Pi is {0}.", Pi);
  }
}

emphasized text

~没有更多了~
我们使用 Cookies 和其他技术来定制您的体验包括您的登录状态等。通过阅读我们的 隐私政策 了解更多相关信息。 单击 接受 或继续使用网站,即表示您同意使用 Cookies 和您的相关数据。
原文