拆分点上的字符串，并在C ++中从中检索每个值 [英] Split the string on dot and retrieve each values from it in C++

问题描述

我需要拆分上的字符串。

I need to split the string on . in C++..

下面是我的字符串 -

Below is my string -

@ event.hello.dc1

在上面的字符串上分割。并从中检索@event，然后将 @event 传递给下面的方法 -

Now I need to split on . on the above string and retrieve the @event from it and then pass @event to the below method -

bool upsert（const char * key）;

以下是我在阅读这里 -

Below is the code I have got so far after reading it from here -

void splitString() {

    string sentence = "@event.hello.dc1";

    istringstream iss(sentence);
    copy(istream_iterator<string>(iss), istream_iterator<string>(), ostream_iterator<string>(cout, "\n"));
}

但我不能理解如何提取 @event 通过分割在。使用上述方法作为上述方法只适用于空格...以及如何从该字符串提取一切通过拆分。如下所述 -

But I am not able to understand how to extract @event by splitting on . using the above method as the above method only works for whitespace... And also how to extract everything from that string by splitting on . as mentioned like below -

split1 = @event
split2 = hello
split3 = dc1

/ p>

Thanks for the help..

推荐答案

您可以使用 std :: getline ：

You can use std::getline:

string sentence = "@event.hello.dc1";
istringstream iss(sentence);
std::vector<std::string> tokens;
std::string token;
while (std::getline(iss, token, '.')) {
    if (!token.empty())
        tokens.push_back(token);
}

tokens[0] == "@event"
tokens[1] == "hello"
tokens[2] == "dc1"

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