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  1. #include <cstdlib>
  2. #include <iostream>
  3. #include <locale>
  4. #include <stdexcept>
  5.  
  6. int main() {
  7.     std::string line;
  8.     std::string input;
  9.     std::size_t bytes = 0;
  10.     std::size_t characters = 0;
  11.  
  12.     try {
  13.         std::locale::global(std::locale(""));
  14.     }
  15.     catch (std::runtime_error const& e) {
  16.         std::cout << e.what() << "\n";
  17.         return 1;
  18.     }
  19.  
  20.     std::cout << "Using locale: " << std::locale().name() << "\n";
  21.  
  22.     while (getline(std::cin, line)) {
  23.         input += line + "\n";
  24.         bytes += line.length();
  25.         for (
  26.                 std::size_t i = 0;
  27.                 i < line.length();
  28.                 i+= std::mblen(line.c_str() + i, line.length() - i)
  29.         )
  30.             ++characters;
  31.     }
  32.  
  33.     std::cout << input;
  34.     std::cout << bytes << " bytes " << characters << " characters\n";
  35. }
Success #stdin #stdout 0.01s 4900KB
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stdin
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stdout
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Using locale: en_US.UTF-8
♠♣♥♦
12 bytes 4 characters
https://ideone.com/l1BMh
language:
C++ (gcc 8.3)
created:
13 years ago
visibility:
public

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