Name

The iswgraph() function tests whether ’wch’ is a visible wide-character i.e it belongs to class graph(see defns for definition).

The result of this function is undefined unless the argument is WEOF or a valid wchar_t value.

The functionality of this API is independent of the program’s current locale and so it returns non-zero for all the characters (of various locales supported) that belong to the class graph, irrespective of the locale they belong to.

#include<wctype.h>
#include<stdio.h>
int test_iswgraph()
{
   int arr[]={’n’,’\f’, 0xe1, ’6’, ’ ’};
   int i = 0;
   int size = 5;
   for( i=0; i<size; i++)
   {
     int ret = iswgraph(arr[i]);
     if( (!ret) != 0 )
     {
        printf("\n%lc is not wide visible char ", arr[i]);
     }
     else
     {
        printf("\n%lc is wide visible char", arr[i]);
     }
   }
printf("\n");
}

Output

n is wide visible char
 is not wide visible char
«¡ is wide visible char
6 is wide visible char
  is not wide visible char

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