iscntrl
function template
<locale>
template <class charT>
bool iscntrl ( charT c, const locale& loc );
Check if character is a control character using locale
Checks whether c is a control character using ctype facet of locale loc, returning the same as a call to:
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use_facet < ctype<charT> > (loc).is (ctype_base::cntrl, c)
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This function replicates the functionality of its C-library equivalent iscntrl. See iscntrl 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 a control character, false otherwise.
Example
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// iscntrl example (C++)
#include <iostream>
#include <string>
#include <locale>
using namespace std;
int main ()
{
locale loc;
string str="first line \n second line \n";
for (size_t i=0; i<str.length(); ++i)
{
if (iscntrl(str[i])) break;
cout << str[i];
}
return 0;
}
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Output:
See also
| ctype | Character type facet (class template) |
locale:isgraph| ispunct | Check if character is a punctuation character using locale (function template) |
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