### Example (isalnum to isxdigit -- Test Integer Value)

This example analyzes all characters between 0x0 and 0xFF. The output of this example is a 256-line table showing the characters from 0 to 255, indicating whether they have the properties tested for.

    #include <stdio.h>
    #include <stdlib.h>
    #include <ctype.h>
    #include <locale.h>

    #define  UPPER_LIMIT   0xFF

    #if (1 == __TOS_OS2__)
       #define LOCNAME "en_us.ibm-437"   /* OS/2 name    */
    #else
       #define LOCNAME "en_us.ibm-1252"  /* Windows name */
    #endif

    int main(void)
    {
       int ch;
    if (NULL == setlocale(LC_ALL, LOCNAME)) {
       printf("Locale \"%s\" could not be loaded\n", LOCNAME);
       exit(1);
    }
       for (ch = 0; ch <= UPPER_LIMIT; ++ch) {
          printf("%3d ", ch);
          printf("%#04x ", ch);
          printf("%3s ", isalnum(ch)?"AN":" ");
          printf("%2s ", isalpha(ch)?"A":" ");
          printf("%2s", iscntrl(ch)?"C":" ");
          printf("%2s", isdigit(ch)?"D":" ");
          printf("%2s", isgraph(ch)?"G":" ");
          printf("%2s", islower(ch)?"L":" ");
          printf(" %c", isprint(ch)?ch:' ');
          printf("%3s", ispunct(ch)?"PU":" ");
          printf("%2s", isspace(ch)?"S":" ");
          printf("%3s", isprint(ch)?"PR":" ");
          printf("%2s", isupper(ch)?"U":" ");
          printf("%2s", isxdigit(ch)?"X":" ");
          putchar('\n');
       }
       return 0;

       /***********************************************************
          The output of this example is a 128-line table showing
          the characters from 0 to 127 that possess the attributes
          tested.
       ***********************************************************/
    }