std::showpos, std::noshowpos - cppreference.com

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# std::showpos, std::noshowpos

From cppreference.com
< cpp‎ | io‎ | manip

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.

### [edit] Parameters

str | - | reference to I/O stream

### [edit] Return value

`str` (reference to the stream after manipulation)

### [edit] 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

### [edit] See also

resetiosflags | clears the specified ios_base flags (function) [edit]
setiosflags | sets the specified ios_base flags (function) [edit]

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