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  1.             #include <iostream>
  2.             #include <iterator>
  3.             #include <regex>
  4.             #include <string>
  5.             #include <vector>
  6.  
  7.             using namespace std;
  8.  
  9.             int main() {
  10.             	string input {"Again this is the example in which shall be searched"};
  11.  
  12.             	string first {"again"};
  13.             	string second {"be"};
  14.  
  15.             	vector<string> words;
  16.             	words.push_back("this");
  17.             	words.push_back("table");
  18.  
  19.  
  20.             	const regex re("\\b" + first + accumulate(next(cbegin(words)), cend(words), "\\b(?:(\\b" + words.front(), [](const auto& lhs, const auto& rhs) { return lhs + "\\b|\\b" + rhs; }) + "\\b.*).*|.)*?" + second + "\\b", regex_constants::icase);
  21.             	smatch sm;
  22.  
  23.             	if (regex_search(input, sm, re) && sm[1].length() == 0U) {
  24.             	    cout << "match\n";
  25.             	} else {
  26.             	    cout << "not a match\n";
  27.             	}
  28.             	return 0;
  29.             }
Success #stdin #stdout 0s 3556KB
comments (?)
stdin
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Standard input is empty
stdout
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not a match
https://ideone.com/iW4v91
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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