RAD Studio |  |

isascii, iswascii

Header File

ctype.h, wctype.h

Category

Classification Routines

Prototype

int isascii(int c);

int iswascii(wint_t c);

Description

Character classification macro.

These functions depend on the LC_CTYPE

isascii is a macro that classifies ASCII-coded integer values by table lookup. It is a predicate returning nonzero for true and 0 for false.

isascii is defined on all integer values.

Return Value

isascii returns nonzero if c is in the range 0 to 127 (0x00-0x7F).

iswascii returns nonzero if c is is a wide-character representation of an ASCII character.

Each of these routines returns 0 if c does not satisfy the test condition.

Example

Copy Code

    #include <stdio.h>
    #include <ctype.h>
    #include <stdio.h>
    int main(void)
    {
      char c = 'C';
      if (isascii(c))
        printf("%c is ascii\n",c);
      else
        printf("%c is not ascii\n",c);
      return 0;
    }

Portability

| POSIX | Win32 | ANSI C | ANSI C++
isascii |  | + |  |
iswascii |  | + |  |

Copyright(C) 2009 Embarcadero Technologies, Inc. All Rights Reserved.
What do you think about this topic? Send feedback!