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

See also¶

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