#include <iostream>

#include <regex>

using namespace std;

int main()

{

    wstring wstr = L"我是1994年出生的，我今年25岁了。";

    wsmatch wsm;

    wregex wre(L"[0-9]+");

    wsregex_iterator itr1(wstr.begin(), wstr.end(), wre);

    wsregex_iterator itr2;

    for (wsregex_iterator itr = itr1; itr != itr2; ++itr)

    {

        wcout << itr->str() << endl;

    }

    return ;

}

#include <iostream>

#include <regex>

using namespace std;

int main()

{

    wstring text = L"百度搜索引擎https://www.baidu.com/^_^";

    wsmatch wsm;

    wregex wre(L"https?://(.+?)/");

    if (regex_search(text, wsm, wre))

    {

        wcout << wsm.str() << endl;

    }

    const wchar_t *str = L"百度搜索引擎https://www.baidu.com/^_^";

    wcmatch wcm;

    if (regex_search(str, wcm, wre))

    {

        wcout << wsm[] << endl;

    }

    return ;

}

#include <iostream>

#include <regex>

using namespace std;

int main()

{

    wstring text = L"long long ago";

    wstring text2 = L"long long";

    wregex wre(L".+ng");

    wcout << boolalpha << regex_match(text, wre) << endl;

    wcout << regex_match(text2, wre) << endl;

    return ;

}