Return c converted to uppercase

Synopsis

constexpr
char
to_upper(char c) noexcept;

Description

This function returns the character, converting it to uppercase if it is lowercase. The function is defined only for low-ASCII characters.

Example

assert( to_upper( 'a' ) == 'A' );

Exception Safety

Throws nothing.

Return Value

The converted character

Parameters

Name	Description
c	The character to convert

See Also

to_lower.