英文:
How to Find the number zero in decimal part where add no value to the number and remove that part
问题
我正在使用以下代码将厘米转换为米。
public static double? ConvertCmToM(double? cm)
{
return cm.Value * 0.01;
}
当我输入数字 8.8 时，输出结果为
> 0.08800000000000001m
但我想要在十进制部分的零不添加任何值的索引处停止。在这种情况下，我希望显示值为
> 0.088m
这在主要的转换网站上已经实现。当您在谷歌上键入cm转换为m转换器时，这些网站会出现。他们是如何做到的呢？
我尝试了相同的示例并放在他们的网站上，这是它们的显示方式。
> 0.088m
我不能盲目地将值转换为字符串后截取字符串，因为零部分可能出现在第5或第6个元素中。这也在这些网站中处理过了。
这是一个双精度数据类型。字母 "m" 最后一刻连接。如何实现这一点？
英文:
I am using the following code to convert cm to the meter.
public static double? ConvertCmToM(double? cm)
{
return cm.Value * 0.01;
}
When I input the number 8.8 output giving as
> 0.08800000000000001m
But I want to stop in the index where zero adds no value in the decimal part. In this case I want to display the value as
> 0.088m
This is already done in major converter websites. when you type the cm to m converter on google those sites will appear. How do they do it?
I took the same sample and put in their sites and this is how they show.
> 0.088m
I cannot blindly substring the value after converting to a string as the zero part will appear in 5th or 6th element.
That also handled in those sites.
This is a double data type. the letter "m" concat at the last minute. How to acehive this?
答案1
得分: 3
我会使用decimal而不是double：
public static decimal? ConvertCmToM(decimal? cm)
{
if(cm == null) return null;
return Decimal.Multiply(cm.Value, 0.01m);
}
static void Main()
{
Console.Write(ConvertCmToM(8.8m)); // 0.088
}
参考链接：https://stackoverflow.com/questions/1165761/decimal-vs-double-which-one-should-i-use-and-when
英文:
I would use decimal instead of double then:
public static decimal? ConvertCmToM(decimal? cm)
{
if(cm == null) return null;
return Decimal.Multiply(cm.Value, 0.01m);
}
static void Main()
{
Console.Write(ConvertCmToM(8.8m)); // 0.088
}
https://stackoverflow.com/questions/1165761/decimal-vs-double-which-one-should-i-use-and-when
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