boost::urls::grammar::to_upper :: Boost Libraries Documentation

# boost::urls::grammar::to_upper

Return c converted to uppercase

## Synopsis

Declared in `<boost/url/grammar/ci_string.hpp>`

    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`.

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