std::showpoint, std::noshowpoint
From cppreference.com
| Defined in header <ios>
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| std::ios_base& showpoint( std::ios_base& str ); |
(1) | |
| std::ios_base& noshowpoint( std::ios_base& str ); |
(2) | |
Enables or disables the unconditional inclusion of the decimal point character in floating-point output. Has no effect on input.
1) Enables the
showpoint flag in the stream str as if by calling str.setf(std::ios_base::showpoint).2) Disables the
showpoint flag in the stream str as if by calling str.unsetf(std::ios_base::showpoint).This is an I/O manipulator, it may be called with an expression such as out << std::showpoint for any out of type std::basic_ostream or with an expression such as in >> std::showpoint for any in of type std::basic_istream.
The character to use as decimal point character is determined by the numpunct facet of the locale imbued in the stream at the time of output, as described in std::num_put::put.
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 << "1.0 with showpoint: " << std::showpoint << 1.0 << '\n' << "1.0 with noshowpoint: " << std::noshowpoint << 1.0 << '\n'; }
Output:
1.0 with showpoint: 1.00000 1.0 with noshowpoint: 1
See also
| clears the specified ios_base flags (function) | |
sets the specified ios_base flags (function) |