function
std::noshowpoint
<ios>
ios_base& noshowpoint ( ios_base& str );
Do not show decimal point
Clears the
showpoint format flag for the
str stream.
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.
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
1 2 3 4 5 6 7 8 9 10 11 12 13 14
|
// modify showpoint flag
#include <iostream>
using namespace std;
int main () {
double a, b, pi;
a=30.0;
b=10000.0;
pi=3.1416;
cout.precision (5);
cout << noshowpoint << a << '\t' << b << '\t' << pi << endl;
cout << showpoint << a << '\t' << b << '\t' << pi << endl;
return 0;
}
|
The execution of this example displays something similar to:
30 10000 3.1416
30.000 10000. 3.1416 |
See also
- showpoint
- Show decimal point (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)