std:: uppercase, std:: nouppercase

Enables the use of uppercase characters in floating-point and hexadecimal integer output. Has no effect on input.

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

Return value

str (reference to the stream after manipulation).

Example

#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