Swap Values Using BYREF

EASYProcedures & Functions5 marks

Write and use a procedure that swaps two integer variables.

The procedure parameters must use BYREF so the caller's variables are changed. Output the two values after the procedure call.

Input: Two integers. Output: The values in swapped order, one per line.

Example:

Input:  4
        9
Output: 9
        4

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Sample Test Cases

Test 1: Different positive values

Inputs: 4, 9

Expected: 9 4

Test 2: Negative and positive

Inputs: -3, 8

Expected: 8 -3