When the showpos format flag is not set, no plus signs precedes any positive (nor zero) value.
This flag can be set with the showpos manipulator, which forces the writting of a plus sign (+) before every non-negative numerical value insterted into the stream, including zero values.
The showpos 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:
1 0 -1 +1 +0 -1
|showpos||Show positive signs (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)|