如何转换字符串指数浮动？ [英] How to convert string with exponent to float?

问题描述

我有以下字符串：3.39112632978e + 001，我需要转换为浮动。 WolframAlpha的说，这个值的结果是33.9112632978这显然我应该得到某种方式，我无法弄清楚如何。

I have the following string: "3.39112632978e+001" which I need to convert to float. WolframAlpha says that the result of this value is 33.9112632978 which evidently I should get somehow and I couldn't figure out how.

Single.Parse("3.39112632978e+001") gives 3.39112624E+12

Double.Parse("3.39112632978e+001") gives 3391126329780.0

float.Parse("3.39112632978e+001") gives 3.39112624E+12

我应该怎么办？

What should I do?

推荐答案

正在经历一个本土化的问题，其中。正在跨preTED为千位分隔符而不是作为一个小数点分隔符。你在，说，欧洲？

You are experiencing a localization issue wherein the . is being interpreted as a thousands separator instead of as a decimal separator. Are you in, say, Europe?

试试这个：

float f = Single.Parse("3.39112632978e+001", CultureInfo.InvariantCulture);
Console.WriteLine(f);

输出：

33.91126

请注意，如果我们替换 由，然后我们看到，您所遇到的行为：

Note that if we replace the . by a , then we see the behavior that you are experiencing:

float g = Single.Parse("3,39112632978e+001", CultureInfo.InvariantCulture);
Console.WriteLine(g);

输出：

3.391126E+12

这支持了我的信念，你正在经历一个本土化的问题。

This supports my belief that you are experiencing a localization issue.

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