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  1. #include <iomanip>
  2. #include <iostream>
  3. #include <sstream>
  4.  
  5. int main(int argc, char **argv)
  6. {
  7.     std::stringstream ss;
  8.     double x = -1.890123;
  9.  
  10.     //insert x into the stream twice with different precisions each time
  11.     ss << std::setprecision(2) << x << std::endl
  12.        << std::setprecision(8) << x << std::endl;
  13.  
  14.     //insert the std::string representation of ss into std::cout
  15.     std::cout << ss.str();
  16.  
  17.     return 0;
  18. }
Success #stdin #stdout 0s 3472KB
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stdin
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Standard input is empty
stdout
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-1.9
-1.890123
https://ideone.com/3LgDiD
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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