Pseudo-code · Question 1 · Easy

What will be the output of the following pseudocode?

Integer a, b
Set a = 15, b = 4
a = a + b
b = a - b
a = a - b
Print a, b
  1. 15 4
  2. 19 15
  3. 4 15
  4. 4 4
Answer and explanation

Answer: C. 4 15

Explanation: a becomes 19, then b = 19 - 4 = 15, then a = 19 - 15 = 4. The values are swapped without a temporary variable.

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