regex_search 函数

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// std_tr1__regex__regex_search.cpp // compile with: /EHsc #include <regex> #include <iostream>  int main()     {     const char *first = "abcd";     const char *last = first + strlen(first);     std::cmatch mr;     std::regex rx("abc");     std::regex_constants::match_flag_type fl =         std::regex_constants::match_default;      std::cout << "search(f, f+1, \"abc\") == " << std::boolalpha         << regex_search(first, first + 1, rx, fl) << std::endl;      std::cout << "search(f, l, \"abc\") == " << std::boolalpha         << regex_search(first, last, mr, rx) << std::endl;     std::cout << "  matched: \"" << mr.str() << "\"" << std::endl;      std::cout << "search(\"a\", \"abc\") == " << std::boolalpha         << regex_search("a", rx) << std::endl;      std::cout << "search(\"xabcd\", \"abc\") == " << std::boolalpha         << regex_search("xabcd", mr, rx) << std::endl;     std::cout << "  matched: \"" << mr.str() << "\"" << std::endl;      std::cout << "search(string, \"abc\") == " << std::boolalpha         << regex_search(std::string("a"), rx) << std::endl;      std::string str("abcabc");     std::match_results<std::string::const_iterator> mr2;     std::cout << "search(string, \"abc\") == " << std::boolalpha         << regex_search(str, mr2, rx) << std::endl;     std::cout << "  matched: \"" << mr2.str() << "\"" << std::endl;      return (0);     }  

<span id="mt18" class="sentence" data-guid="e952de1597758af8c64a8fc50a99280d" data-source="" search(f,="" f+1,="" "abc")="=" false"="" xml:space="preserve">搜索 (a、f+1，“abc ==) 的错误搜索 (a、、，“abc true ==)  匹配：“abc”错误 (搜索“a”，“abc 的 ==)true (搜索“xabcd”，“abc 的 ==)  匹配：“abc”错误搜索 (字符串，“abc 的 ==)true 搜索 (字符串，“abc 的 ==)  匹配：“abc

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