When the showpoint format flag is not set, the decimal point is only written when necessary for non-whole floating-point values inserted into the stream.
This flag can be set with the showpoint manipulator. When the showpoint format flag is set, the decimal point is always written for floating point values insterted into the stream, even for whole numbers.
The showpoint flag is not set in standard streams on initialization.
- Stream object where to apply.
Because this function is a manipulator, it is designed to be used alone with no arguments in conjunction with the insertion (<<) and extraction (>>) operations on streams (see example below).
Return ValueA reference to the stream object.
The execution of this example displays something similar to:
30 10000 3.1416 30.000 10000. 3.1416
|showpoint||Show decimal point (manipulator function)|
|ios_base::flags||Get/set format flags (public member function)|
|ios_base::setf||Set specific format flags (public member function)|
|ios_base::unsetf||Clear specific format flags (public member function)|