rpmatch—determine whether response to question is affirmative or negative #include <stdlib.h>
int rpmatch(const char *response);
Description
The rpmatch function determines whether response is an affirmative
or negative response to a question according to the current locale.
Returns
rpmatch returns 1 if response is affirmative, 0 if negative, or -1
if not recognized as either.
Portability
rpmatch is a BSD extension also found in glibc.