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  1. #include <iostream>
  2. #include <regex>
  3.  
  4. int main() {
  5.     std::string s = "{\"|1|\":\"A\",\"|2|\":\"B\",\"|37|\":\"4234235\",\"|4|\":\"C\"}";
  6.     std::cout << s <<"\n";
  7.     std::regex regex(R"(\|37\|":"(\d+))");
  8.     std::smatch m;
  9.     regex_search(s, m, regex);
  10.     std::cout << "match: " << m.str(1) << std::endl;
  11.     return 0;
  12. }
Success #stdin #stdout 0s 4956KB
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stdout
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{"|1|":"A","|2|":"B","|37|":"4234235","|4|":"C"}
match: 4234235
https://ideone.com/MtZoHM
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
secret

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