从一个字符串中提取数字 [英] Extract Digits From one String

问题描述

我有一个csv文件，其中某些列包含相同的参数"TakeProfit_II = 440"
我读取数据并将其保存在矢量中.我想知道如何比该字符串提取数字.
例如，提取440比"TakeProfit_II = 440"
问候，

I have one csv file that some columns are include parameters same "TakeProfit_II=440"
I read data and save all in vector. I want know how to extract digit than this string.
For example extract 440 than "TakeProfit_II=440"
Regards,

推荐答案

如果您现在可以使用数据格式，则可以简单地使用: ^ ]

If you now the format of the data could you use simply: sscanf[^]

您可以使用boost lexcical_cast.
以下是链接:
Boost Lexical cast [

You can use boost lexcical_cast.
Below is the link:
Boost Lexical cast[^]
Use this if your are already having boost. Else boost is a mega download. But boost is very good if you really want to work in hardcore C++.

您可以使用 ^ ] CString中的方法来分割字符串，并尝试仅选择数字部分

You can use Tokenize[^] metod from CString to split the string and try to select only the number part

这篇关于从一个字符串中提取数字的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！