Return Values CS Thinking Example 1

Follow the full solution, then compare it with the other examples linked below.

Example 1

medium
FUNCTION square(n): RETURN n * n. What is the output of: SET result = square(4) + square(3). OUTPUT result.

Solution

  1. 1
    Step 1: square(4) returns 4 * 4 = 16.
  2. 2
    Step 2: square(3) returns 3 * 3 = 9.
  3. 3
    Step 3: result = 16 + 9 = 25. Output: 25.

Answer

2525
Return values allow functions to send data back to the caller. The returned value can be used in expressions, assigned to variables, or passed to other functions.

About Return Values

The value that a function sends back to the code that called it, specified by the return statement. When a function executes a return statement, it immediately stops running and passes the specified value back to the caller, where it can be stored, used in expressions, or passed to other functions.

Learn more about Return Values →

More Return Values Examples

Example 2 medium

What is the difference between a function that returns a value and one that just prints? Compare: FU

Example 3 medium

FUNCTION max(a, b): IF a > b THEN RETURN a ELSE RETURN b. What is max(max(3, 7), max(5, 2))?

Example 4 medium

What is the output of this program? FUNCTION double(n) RETURN n * 2 END FUNCTION FUNCTION addThr

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