GATE1988-8ii

Question

Consider the two program segments below:

1. for
       i:=1 to f(x) by 1 do
       S
   end

2. i:=1;
   While   i<=f(x) do
           S
           i:=i+1
   end
   

Under what conditions are these two programs equivalent? Treat $S$ as any sequence of statement and f as a function.

Answer 1

In both program segment if f(x) returns same value

Comments

What is the meaning of

for i:=1 to f(x) by1do

Does this mean i=1 to i<f(x)

---

It means:  i=1 to i$\leq$f(x)