isascii - test for a 7-bit US-ASCII character
#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.
<ctype.h>
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Derived from Issue 1 of the SVID.