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  1. #include <iostream>
  2. #include <sstream>
  3. #include <iomanip>
  4.  
  5. int main(int argc, char* argv[]) {
  6.   std::stringstream aSs;
  7.   aSs << std::left << std::setfill('0') << std::setw(12) << 123;
  8.  
  9.   std::string aStr = aSs.str();  // <--  get as std::string
  10.   std::cout << aStr << '\n';
  11.  
  12.   return 0;
  13. }
Success #stdin #stdout 0s 4500KB
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stdin
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Standard input is empty
stdout
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123000000000
https://ideone.com/Qu8Y0e
language:
C++14 (clang 8.0)
created:
6 years ago
visibility:
public

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