双数据类型需要5位小数 [英] Need 5 decimal places in double data type

问题描述

我想表现出如此舒缓的感觉

双倍a = 1.16200而不是1.162



我尝试了什么：



双a = 1.16200

但它显示a = 1.162

I want to show soothing like that
double a = 1.16200 instead of 1.162

What I have tried:

double a = 1.16200
but it's showing a = 1.162

推荐答案

Quote：

在双数据类型中需要5位小数

Need 5 decimal places in double data type

看起来像格式化问题，但你没有展示你的代码。

C＃格式编号作为字符串示例 - code-sample.net [ ^ ]

标准数字格式字符串| Microsoft Docs [ ^ ]

数字本身没有格式概念：1.6与1.60000相同，123与0000000000123相同。

他们获得格式的唯一时间是将它们转换为字符串以便呈现给用户，可以通过使用string.Format或ToSting显式地显示，也可以使用Write或WriteLine方法隐式生成输出。 br />


VS中的查看号码使用默认格式，显示最后一个非零数字。



如果要显示特定数量的小数位，则需要在显示数据时使用特定的格式字符串：

Numbers in themselves don't have an concept of format: 1.6 is the same as 1.60000 and 123 is the same as 0000000000123.
The only time they get a format is when you convert them to a string for presentation to the user, either explicitly by using string.Format or ToSting, or implicitly by using a Write or WriteLine method to generate output.

And viewing numbers in VS uses a "default format" which shows up to the last non-zero digit.

If you want to show a specific number of decimal places, you need to use specific format strings when you present the data:

double d1 = 1.162;
double d2 = 1.16200000000001;
Console.WriteLine(

{d1}，{d2 }）;
Console.WriteLine（

"{d1}, {d2}"); Console.WriteLine(

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