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  1. #include<iostream>
  2. #include<regex>
  3. #include<string>
  4. using namespace std;
  5.  
  6. int main()
  7. {
  8. string str{"abcabc"};
  9. regex reg{"a"};
  10. smatch match;
  11. if(regex_search(str,match,reg))
  12. for(auto &val:match)
  13. cout<<val<<endl;
  14. }
Success #stdin #stdout 0s 3544KB
stdin
Standard input is empty
stdout
a