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  1. #include <iostream>
  2. #include <string>
  3. #include <regex>
  4.  
  5. using namespace std;
  6.  
  7. int main()
  8. {
  9.   cout << regex_replace("123", regex("^|."), "#") << '\n';
  10.   return 0;
  11. }
Success #stdin #stdout 0s 3500KB
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####
https://ideone.com/nu0zNs
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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