Write a program in PROLOG to implement factorial (N, F) where F represents the factorial of a number N.

3. Write a program in PROLOG to implement factorial (N, F) where F represents the factorial of a number N.

% Write a program in PROLOG to implement factorial (N, F) 

  where F represents the factorial of a number N.

%  below factorial function is not predefined you can use any name as function

factorial(0, 1).

factorial(N, X) :-

N > 0,

Y is N - 1,

factorial(Y, Z),

X is Z * N.

% Output