std::uppercase, std::nouppercase

 

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Input/output manipulators

Floating-point formatting
showpointnoshowpoint setprecision	fixedscientifichexfloatdefaultfloat (哋它亢++11)(哋它亢++11)
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setbase showbasenoshowbase	dechexoct
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boolalphanoboolalpha
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showposnoshowpos	uppercasenouppercase
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resetiosflags	setiosflags
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Quoted manipulator
quoted (哋它亢++14)

 

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)