isgraph
function template
<locale>
template <class charT>
bool isgraph ( charT c, const locale& loc );
Check if character has graphical representation using locale
Checks whether c is has graphical representation 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::graph, c)
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This function replicates the functionality of its C-library equivalent isgraph. See isgraph 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 has graphical representation, false otherwise.
Example
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// isgraph example (C++)
#include <iostream>
#include <fstream>
#include <string>
#include <locale>
using namespace std;
int main ()
{
locale loc;
ifstream myfile ("myfile.txt");
char c;
while (myfile.good())
{
myfile >> c;
if ( isgraph(c,loc) ) cout << c;
}
myfile.close();
return 0;
}
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This example prints out the contents of myfile.txt without spaces and special characters, i.e. only prints out the characters that qualify as isgraph.
See also
| ctype | Character type facet (class template) |
| isprint | Check if character is printable using locale (function template) |
| isspace | Check if character is a white-space using locale (function template) |
| isalnum | Check if character is alphanumeric using locale (function template) |
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