std::uppercase,std::nouppercase(3)

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

Synopsis
   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.

Parameters
   str - reference to I/O stream

Return value
   str (reference to the stream after manipulation).

Example
// 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';
 }

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

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