April 17, 2008 ISASCII 3

### NAME

isascii - test for ASCII character

### LIBRARY

Standard C Library (libc, -lc)

### SYNOPSIS

```int` isascii(```int c`)

### DESCRIPTION

The isascii(``) function tests for an ASCII character, which is any character with a value in the range from 0 to 127, inclusive.

The isascii(``) is defined on all integer values.

### SEE ALSO

ctype(3), isalnum(3), isalpha(3), isblank(3), iscntrl(3), isdigit(3), isgraph(3), islower(3), isprint(3), ispunct(3), isspace(3), isupper(3), isxdigit(3), stdio(3), toascii(3), tolower(3), toupper(3), ascii(7)

### STANDARDS

The isascii(``) function conforms to X/Open Portability Guide Issue 4 (``XPG4'') .