12. Write a Prolog program to implement sumlist(List,Sum) so that Sum is the sum of a given list of numbers List.

  12. Write a Prolog program to implement sumlist(List,Sum) so that Sum is the sum of a given list of numbers List. 

sumlist([],0).

 

sumlist([H|T],R):-

sumlist(T,R1),

  R is H+R1.

OUTPUT:

sumlist([6,9,70],X).

X = 85