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  1. # include <iostream>
  2. #include <regex>
  3.  
  4. int main ()
  5. {
  6.   const char * numbers = "500 42 399 4711";
  7.   std::regex expr("[0-9]+");
  8.   std::match_results<const char *> matches;
  9.   if (std::regex_search
  10.       (numbers
  11.        , matches
  12.        , expr
  13.        , std::regex_constants::match_continuous))
  14.     {
  15.       printf ("match: %s", matches [0].str ().c_str ());
  16.     }
  17.   else
  18.     {
  19.       puts("No match.");
  20.     }
  21. }
  22.  
Success #stdin #stdout 0s 3360KB
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stdin
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Standard input is empty
stdout
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match: 500
https://ideone.com/ChqQIb
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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