ref: 2ce5f2b4ecfc37cbc032b5ea2102caa2de7bd6c6
dir: /sys/src/cmd/auth/lib/answer.c/
#include <u.h>
#include <libc.h>
#include <bio.h>
#include <authsrv.h>
#include "authcmdlib.h"
int
answer(char *q)
{
char pr[128];
int y;
snprint(pr, sizeof(pr), "%s [y/n]", q);
q = readcons(pr, nil, 0);
y = q != nil && (*q == 'y' || *q == 'Y');
free(q);
return y;
}