#include <stdio.h>
        #include <iconv.h>
        #include <errno.h>

        int main()
        {
          /* Declare variables to be used                      */

          char fromcodeset[30];
          char tocodeset[30];
          int iconv_opened;
          iconv_t iconv_struct;       /* Iconv descriptor      */

          /* Initialize variables                              */

          sprintf(fromcodeset, "DECHANYU");
          sprintf(tocodeset, "EUCTW");
          iconv_opened = FALSE;

          /* Attempt to create a conversion descriptor for the */
          /* codesets specified. If the return value from      */
          /* iconv_open is -1 then an error has occurred.      */
          /*  Check the value of errno.                        */

          if ((iconv_struct = iconv_open(tocodeset, fromcodeset))

              /* Check the value of errno                      */

              switch (errno) {
              case EMFILE:
              case ENFILE:
                  printf("Too many iconv conversion files open\n");
                  break;

              case ENOMEM:
                  printf("Not enough memory\n");
                  break;

              case EINVAL:
                  printf("Unsupported conversion\n");
                  break;

              default:
                  printf("Unexpected error from iconv_open\n");
                  break;
             }
          }
          else

              /* Successfully allocated a conversion descriptor   */

              iconv_opened = TRUE;

          /*  Was a conversion descriptor allocated               */

           if (iconv_opened) {

              /* Attempt to deallocate the conversion descriptor. */
              /* If iconv_close returns -1 then an error has      */
              /* occurred.                                        */

              if (iconv_close(iconv_struct) == -1) {

                  /* An error occurred. Check the value of errno  */

                  switch (errno) {
                  case EBADF:
                      printf("Conversion descriptor is invalid\n");
                      break;
                  default:
                      printf("Unexpected error from iconv_close\n");
                      break;
                  }
              }
          }
          return (EXIT_FAILURE);
        }