ISASCII(3) Library Functions Manual ISASCII(3)

NAME

isascii — test for a 7-bit US-ASCII character

SYNOPSIS

#include <ctype.h>

int isascii(int c);

The isascii() function tests whether c is a 7-bit US-ASCII character code.

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

The isascii() function returns non-zero if c is a 7-bit US-ASCII character code between 0 and octal 0177 inclusive; otherwise it returns 0.

No errors are defined.

None.

None.

None.

Derived from Issue 1 of the SVID.

February 1997 posix.fail