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      std::showpos,std::noshowpos

      From cppreference.com
      <cpp‎ |io‎ |manip
       
       
       
      Input/output manipulators
      Floating-point formatting
      Integer formatting
      Boolean formatting
      Field width and fill control
      Other formatting
      showposnoshowpos
      Whitespace processing
      Output flushing
      Status flags manipulation
      Time and money I/O
      (C++11)
      (C++11)
      (C++11)
      (C++11)
      Quoted manipulator
      (C++14)
       
      Defined in header<ios>
      (1)
      std::ios_base& noshowpos(std::ios_base& str);
      (2)

      Enables or disables the display of the plus sign'+' in non-negative integer output. Has no effect on input.

      1) Enables theshowpos flag in the streamstr as if by callingstr.setf(std::ios_base::showpos).
      2) Disables theshowpos flag in the streamstr as if by callingstr.unsetf(std::ios_base::showpos).

      This is an I/O manipulator, it may be called with an expression such asout<< std::showpos for anyout of typestd::basic_ostream or with an expression such asin>> std::showpos for anyin of typestd::basic_istream.

      Contents

      [edit]Parameters

      str - reference to I/O stream

      [edit]Return value

      str (reference to the stream after manipulation).

      [edit]Example

      Run this code
      #include <iostream> int main(){std::cout<<"showpos: "<< std::showpos<<42<<' '<<3.14<<' '<<0<<'\n'<<"noshowpos: "<< std::noshowpos<<42<<' '<<3.14<<' '<<0<<'\n';}

      Output:

      showpos: +42 +3.14 +0noshowpos: 42 3.14 0

      [edit]See also

      clears the specified ios_base flags
      (function)[edit]
      sets the specifiedios_base flags
      (function)[edit]
      Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/io/manip/showpos&oldid=159188"

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