agsb/askcards

play Decision Tables from simple (question/yes/no/match) cards

askcards

-- this file is a stub -- still

Play Decision Tables from simple (question/yes/no/response) cards

Cards define the structure of sequence of questions with yes or no responses, only. Each card have a identification, by now, a long integer (4 bytes), maybe at future a uuid. Each card have a counter of how many cards points to it. Each card have some flags for control.

Conditions:

Each question card must point to a Yes card (okey) and to a No card (nyet).

A response card do have a NULL (zero) in okey and nyet;

Card definition

A single struct holds a record card, defined by

index,  a number of this card
okey, the card to go if answer is yes
nyet, the card to go if answer is no
question/response, the question or response
counter,  a counter of links to this card
flags,  some flags for this card

for tests a record card is 128 bytes, then question is a asciiz string of 111 characters;

index, okey, nyet are long integers, as a linked list, count and flag are integers, and question is char[];

first 8 cards, 0 to 7 are reserved for indexes and status

Eg. 2 Mb could keep 2048 questions and 4096 responses

Special cards

0   it holds: question is a collection resume, index as number of cards in colection, okey as next empty card, nyet as next free card at linked list of deleted,
1, 2, 3, 4, 5, 6, 7 not used now

** using libc definitions