std::setiosflags (an abbreviation of 'set input/output stream flags') is a stream modifier.


#include <iomanip>

#include <iostream>



int main()

{

  const double x = 12.34;

  std::cout

    << std::setiosflags(std::ios::scientific)

    << x << '\n'

    << std::setiosflags(std::ios::fixed)

    << x << '\n';

}

Screen output:


1.234000e+01

12.34

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(C++) std::setiosflags