hackerghost93

/*This to call the outside function .. the inside function "average"
 calculate the result and give it back to the outside function
 "avg"
*/
avg(List,Ans):-
	Count is 0,
	Sum is 0 ,
	average(List,Count,Sum,Ans).

/* This is the most important line you need to handle base case well use trace command in SWI-PROLOG