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ISASCII(3)
ISASCII(3) FreeBSD Library Functions Manual ISASCII(3)

NAME

isasciitest for ASCII character

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include < ctype.h>

int
isascii( int c);

DESCRIPTION

The isascii() function tests for an ASCII character, which is any character between 0 and octal 0177 inclusive.
October 6, 2002 FreeBSD