std::setiosflags

 

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showpoint noshowpoint setprecision	fixed scientific hexfloat defaultfloat (C++11) (C++11)
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showpos noshowpos	uppercase nouppercase
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resetiosflags	setiosflags
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Defined in header <iomanip>
/*unspecified*/ setiosflags( std::ios_base::fmt_flags mask );

When used in an expression out << setiosflags(mask) or in >> setiosflags(mask), sets all format flags of the stream out or in as specified by the mask.

Parameters

mask

-

bitmask of the flags to set

Return value

Returns an object of unspecified type such that if str is the name of an output stream of type std::basic_ostream<CharT, Traits> or std::basic_istream<CharT, Traits>, then the expression str << setiosflags(mask) or str >> setiosflags(mask) behaves as if the following code was executed:

str.setf(mask);

Example

run this code

#include <iostream>
#include <iomanip>
 
int main()
{
    std::cout <<  std::resetiosflags(std::ios_base::dec) 
              <<  std::setiosflags(  std::ios_base::hex
                                   | std::ios_base::uppercase
                                   | std::ios_base::showbase) << 42 << '\n';
}

Output:

0X2A

See also

setf	sets specific format flag (public member function of std::ios_base)
resetiosflags	clears the specified ios_base flags (function)