std::uppercase,std::nouppercase (3) - Linux Manuals

std::uppercase,std::nouppercase: std::uppercase,std::nouppercase


std::uppercase,std::nouppercase - std::uppercase,std::nouppercase


Defined in header <ios>
std::ios_base& uppercase( std::ios_base& str ); (1)
std::ios_base& nouppercase( std::ios_base& str ); (2)

Enables the use of uppercase characters in floating-point and hexadecimal integer output. Has no effect on input.
1) enables the uppercase flag in the stream str as if by calling str.setf(std::ios_base::uppercase)
2) disables the uppercase flag in the stream str as if by calling str.unsetf(std::ios_base::uppercase)
This is an I/O manipulator, it may be called with an expression such as out << std::uppercase for any out of type std::basic_ostream or with an expression such as in >> std::uppercase for any in of type std::basic_istream.


str - reference to I/O stream

Return value

str (reference to the stream after manipulation)


// Run this code

  #include <iostream>
  int main()
      std::cout << std::hex << std::showbase
                << "0x2a with uppercase: " << std::uppercase << 0x2a << '\n'
                << "0x2a with nouppercase: " << std::nouppercase << 0x2a << '\n'
                << "1e-10 with uppercase: " << std::uppercase << 1e-10 << '\n'
                << "1e-10 with nouppercase: " << std::nouppercase << 1e-10 << '\n';


  0x2a with uppercase: 0X2A
  0x2a with nouppercase: 0x2a
  1e-10 with uppercase: 1E-10
  1e-10 with nouppercase: 1e-10

See also

              clears the specified ios_base flags
resetiosflags (function)
              sets the specified ios_base flags
setiosflags (function)