std::showpos,std::noshowpos (3) Linux Manual Page

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

See also

              clears the specified ios_base flags
resetiosflags (function)
              sets the specified ios_base flags
setiosflags (function)