Split the string on dot and retrieve each values from it in C++

Question

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

Below is my string -

@event.hello.dc1

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);

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"));
}

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

Thanks for the help..

Answer 1

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);
}

which results in:

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