Implementation of Monkey-Banana Problem in Prolog

domains
X=string

predicates
take(X,X)
move(X,X)
get_on(X,X)
hit(X,X,X)

go clauses
go:-
take("Monkey","Stick"),
move("Monkey","Chair"),
get_on("Monkey","Chair"),
hit("Monkey","Stick","Banana"),
write("The monkey has hit the banana").

go:-
write("The monkey couldn't reach the banana").

take(Animal,Object):-
write("Does the ",Animal," take the ",Object,"?(y/n)"),
readchar(Reply),
Reply='y'.

move(Animal,Object):-
write("Does the ",Animal," move the ",Object,"?(y/n)"),
readchar(Reply),
Reply='y'.

get_on(Animal,Object):-
write("Does the ",Animal," get on ",Object,"?(y/n)"),
readchar(Reply),
Reply='y'.

hit(Animal,Object,Fruit):-
write("Does the ",Animal," hit the ",Fruit,"with the",Object,"?(y/n)"),
readchar(Reply),
Reply='y'.

Output:
Goal:go
Does the Monkey take the Stick?(y/n)
y
Does the Monkey move the Chair?(y/n)
y
Does the Monkey get on Chair?(y/n)
y
Does the Monkey hit the Banana with the Stick?(y/n)
y
The monkey has hit the banana

Goal:go
Does the Monkey take the Stick?(y/n)
y
Does the Monkey move the Chair?(y/n)
n
The monkey couldn't reach the banana

2 thoughts on “Implementation of Monkey-Banana Problem in Prolog”

  1. ?- [‘L:/MANOJ/8TH SEM/AI/PROLOG TRY/Monkey_B2.pl’].
    ERROR: l:/manoj/8th sem/ai/prolog try/monkey_b2.pl:1:8: Syntax error: Operator expected
    Warning: l:/manoj/8th sem/ai/prolog try/monkey_b2.pl:18:
    Redefined static procedure go/0
    Previously defined at l:/manoj/8th sem/ai/prolog try/diagnosis.pl:15
    true.

    error occurred

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