Pseudo-code · Question 20 · Easy

What will be the output of the following pseudocode? (Note: / denotes integer division.)

Integer n, rev
Set n = 507, rev = 0
while (n > 0)
    rev = rev * 10 + (n mod 10)
    n = n / 10
end while
Print rev
  1. 507
  2. 75
  3. 705
  4. 57
Answer and explanation

Answer: C. 705

Explanation: The loop takes the last digit each time: rev becomes 7, then 70, then 705. The middle 0 is kept because it is not a leading zero of the result.

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