function
std::noboolalpha
<ios>
ios_base& noboolalpha ( ios_base& str );
No alphanumerical bool values
Clears the
boolalpha format flag for the
str stream.
When the
boolalpha format flag is not set,
bool values are insterted/extracted as integral values (
0 and
1) instead of their
bool names:
true and
false.
This flag can be set using the
boolalpha manipulator.
The
boolalpha 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
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// modify boolalpha flag
#include <iostream>
using namespace std;
int main () {
bool b;
b=true;
cout << noboolalpha << b << endl;
cout << boolalpha << b << endl;
return 0;
}
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The execution of this example displays something similar to:
See also
- boolalpha
- Alphanumerical bool values (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)