function template
<locale>

std::toupper

template <class charT>
  charT toupper (charT c, const locale& loc);
Convert lowercase letter to uppercase using locale
Converts parameter c to its uppercase equivalent if c is a lowercase letter and has an uppercase equivalent, as determined by the ctype facet of locale loc. If no such conversion is possible, the value returned is c unchanged.

This function returns the same as if ctype::toupper is called as:

 
 
use_facet < ctype<charT> > (loc).toupper (c)


This function template overloads the C function toupper (defined in <cctype>).

Parameters

c
Character to be converted.
loc
Locale to be used. It shall have a ctype facet.

The template argument charT is the character type.

Return Value

The uppercase equivalent to c, if any. Or c unchanged otherwise.

Example

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// toupper example (C++)
#include <iostream>       // std::cout
#include <string>         // std::string
#include <locale>         // std::locale, std::toupper

int main ()
{
  std::locale loc;
  std::string str="Test String.\n";
  for (std::string::size_type i=0; i<str.length(); ++i)
    std::cout << std::toupper(str[i],loc);
  return 0;
}


Output:

TEST STRING.

Data races

Both loc and its ctype facet are accessed.

Exception safety

Strong guarantee: if an exception is thrown, there are no effects.

See also

ctype
Character type facet (class template )
toupper (cctype)
Convert lowercase letter to uppercase (function )
tolower
Convert uppercase letter to lowercase using locale (function template )
islower
Check if character is a lowercase letter using locale (function template )
isupper
Check if character is an uppercase letter using locale (function template )
isalpha
Check if character is alphabetic using locale (function template )

C++