std::showpo...d::noshowpos(3)

💅 NAME 💅

std::showpos, std::noshowpos — ok so these are literally the twin manipulators that turn the plus sign on and off in your output 🎀 (breaking news from the C++ Standard Library, bestie, and yes I folded the manual name in right there, you're welcome ✨)

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✨ SYNOPSIS ✨

Defined in header <ios>:

std::ios_base& showpos( std::ios_base& str );   (1)
std::ios_base& noshowpos( std::ios_base& str ); (2)

So what do they actually do? They enable or disable the display of the plus sign '+' in non-negative integer output 🫶

And bestie, hear me: it has no effect on input. None. Zero. Nada. 🙈

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) 💀

Also!! This is an I/O manipulator, meaning 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 🦋

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🌸 PARAMETERS 🌸

• str — reference to I/O stream. That's it. That's the whole parameter list. Iconic minimalism 💅

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🎀 RETURN VALUE 🎀

str — the reference to the stream after manipulation, handed right back to you like a bestie returning your lip gloss 🫶

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⭐ EXAMPLE ⭐

Run this code, no cap:

#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 how the plus signs just appear? Ate. 🔥

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💜 SEE ALSO 💜

• resetiosflags — clears the specified ios_base flags (function) 🧹
• setiosflags — sets the specified ios_base flags (function) ✨

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That's the whole page, bestie — freshly served from http://cppreference.com, version 2024.06.10, and yeah the date on this one is 2024.06.10 too. Go forth and plus-sign your integers 💖🌈🦋