std::showpos,std::noshowpos (3) - Linux Manuals

std::showpos,std::noshowpos: std::showpos,std::noshowpos

NAME

std::showpos,std::noshowpos - std::showpos,std::noshowpos

Synopsis

Defined in header <ios>
std::ios_base& showpos( std::ios_base& str ); (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 the showpos flag in the stream str as if by calling str.setf(std::ios_base::showpos)
2) disables the showpos flag in the stream str as if by calling str.unsetf(std::ios_base::showpos)
This is an I/O manipulator, it may be called with an expression such as out << std::showpos for any out of type std::basic_ostream or with an expression such as in >> std::showpos for any in of type std::basic_istream.

Parameters

str - reference to I/O stream

Return value

str (reference to the stream after manipulation)

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 +0
  noshowpos: 42 3.14 0