std::regex_iterator

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C++ Standard Library
Regular expressions library
Classes
basic_regex(C++11)
sub_match(C++11)
match_results(C++11)
Algorithms
regex_match(C++11)
regex_search(C++11)
regex_replace(C++11)
Iterators
regex_iterator(C++11)
regex_token_iterator(C++11)
Exceptions
regex_error(C++11)
Traits
regex_traits(C++11)
Constants
syntax_option_type(C++11)
match_flag_type(C++11)
error_type(C++11)
template<

    class BidirectionalIterator,
    class CharT = typename std::iterator_traits<BidirectionalIterator>::value_type,
    class Traits = std::regex_traits<CharT>

> class regex_iterator
 (since C++11)
This section is incomplete

Several specializations for common character sequence types are defined:

Defined in header <regex>
Type Definition
cregex_iterator regex_iterator<const char*>
wcregex_iterator regex_iterator<const wchar_t*>
sregex_iterator regex_iterator<std::string::const_iterator>
wsregex_iterator regex_iterator<std::wstring::const_iterator>
This section is incomplete

[edit] Example

#include <regex>
#include <iterator>
#include <iostream>
int main()
{
    const std::string text = "Quick brown fox.";
 
    std::cout << "The number of words is " <<
        std::distance(
            std::sregex_iterator(text.begin(), text.end(), std::regex("[^\\s]+")),
            std::sregex_iterator()
        ) << '\n';
}

Output: 

The number of words is 3
Retrieved from "http://en.cppreference.com/w/cpp/regex/regex_iterator"
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