Programming

Question 10

What value would the following function return for the input x=95?

                 Function fun (x:integer):integer;
      Begin
                 If x > 100 then fun = x - 10
                 Else fun = fun(fun(x + 11))
      End;

A	89
B	90
C	91
D	92

ProgrammingProgrammingGATE 1998

Question 10 Explanation:

Value returned by
fun(95) = fun(fun(106))
= fun(96)
= fun(fun(107))
= fun(97)
= fun(fun(108))
= fun(98)
= fun(fun(109))
= fun(99)
= fun(110)
= fun(100)
= fun(fun(111))
= fun(101)
= 91

Correct Answer: C

Question 10 Explanation:

Value returned by
fun(95) = fun(fun(106))
= fun(96)
= fun(fun(107))
= fun(97)
= fun(fun(108))
= fun(98)
= fun(fun(109))
= fun(99)
= fun(110)
= fun(100)
= fun(fun(111))
= fun(101)
= 91