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showpos
manipulator function
<ios>
ios_base& showpos ( ios_base& str );
Show positive signs
Sets the showpos format flag for the str stream.
When the showpos format flag is set, a plus sign (+) precedes every non-negative numerical value insterted into the stream, including zeros.
This flag can be unset with the noshowpos manipulator.
The showpos flag is not set in standard streams on initialization.
Parameters
- str
- 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 Value
A reference to the stream object.
Example
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// modify showpoint flag
#include <iostream>
using namespace std;
int main () {
signed int p, z, n;
p=1;
z=0;
n=-1;
cout << showpos << p << '\t' << z << '\t' << n << endl;
cout << noshowpos << p << '\t' << z << '\t' << n << endl;
return 0;
}
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The execution of this example displays something similar to:
See also
| noshowpos | Do not show positive signs (manipulator function) |
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