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  1. #include <iostream>
  2. #include <fstream>
  3. #include <string>
  4. #include <regex>
  5. #include <iostream>
  6. using namespace std;
  7.  
  8. int main() {
  9. 	string word;
  10.     regex re(R"(\w)");
  11.     getline(cin,word);
  12.     smatch Word;
  13.     if (regex_search(word,Word,re)) {
  14.     		cout<<Word.str()<<"\n";
  15.     }
  16.  
  17.  
  18.             /*if (fin.eof()){
  19.                 i++;
  20.                 fin.clear();
  21.                 fin.seekg(0);
  22.             }*/
  23.  
  24.  
  25.     return 0;
  26. }
  27.  
  28.  
  29.  
Success #stdin #stdout 0.01s 5272KB
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stdin
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ABC CDG EFT GHF
stdout
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A
https://ideone.com/acnWR1
language:
C++ (gcc 8.3)
created:
14 days ago
visibility:
public

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