std::setiosflags (3) - Linux Manuals

std::setiosflags: std::setiosflags

NAME

std::setiosflags - std::setiosflags

Synopsis

Defined in header <iomanip>
/*unspecified*/ setiosflags( std::ios_base::fmtflags 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 a 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