std::showpos, std::noshowpos
From cppreference.com
| Defined in header <ios>
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| 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 (function) | |
| sets the specified ios_base flags (function) |