isupper


function template
<locale>
template <class charT>
  bool isupper ( charT c, const locale& loc );

Check if character is an uppercase letter using locale

Checks whether c is an uppercase letter using ctype facet of locale loc, returning the same as a call to:

 
use_facet < ctype<charT> > (loc).is (ctype_base::upper, c)


This function replicates the functionality of its C-library equivalent isupper. See isupper for more info.

Parameters

c
Character to be checked.
loc
Locale to be used. Shall have facet ctype present.


Template parameter charT is the character type.

Return Value

true if indeed c is an uppercase letter, false otherwise.

Example

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// isupper example (C++)
#include <iostream>
#include <string>
#include <locale>
using namespace std;

int main ()
{
  locale loc;
  string str="Test String.\n";
  char c;
  for (size_t i=0; i<str.length(); ++i)
  {
    c=str[i];
    if (isupper(c,loc)) c=tolower(c,loc);
    cout << c;
  }
  return 0;
}


Output:
test string. 


See also