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Finding Maximum, Minimum & Calculating Average

A current maximum or minimum must start at a value that is valid for the actual dataset. Guessing 9999 as a minimum fails if every input exceeds 9999; starting a maximum at zero fails for all-negative data.

Worked example

Read the first value, 12000. Set both Minimum and Maximum to 12000. The next value, 15000, changes Maximum only. A later 11000 changes Minimum only. The result is based on observations rather than a guessed limit.

INPUT Value
Minimum <- Value
Maximum <- Value
FOR i <- 2 TO 5
    INPUT Value
    IF Value < Minimum THEN
        Minimum <- Value
    ENDIF
    IF Value > Maximum THEN
        Maximum <- Value
    ENDIF
NEXT i

Trace before coding

For -6,-2,-9, the successive (minimum,maximum) pairs are (-6,-6), (-6,-2), (-9,-2). Equal values do not require changing either extreme. Test all-equal, all-negative and large values, not only convenient positive values.

The separate mean lesson combines total and count and handles an empty dataset.

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Exercise:
Task 1 Task 2 Task 3

Independent Practice: Safe maximum and minimum

+30 XP

Read five integers, which may be negative or greater than 9999. Output the maximum and then the minimum. Do not assume arbitrary upper or lower limits.

Write a complete program. Read inputs in the stated order. Output only the requested results, one per line, without input prompts. Test with your own values before submitting.

solution.pseudo
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○ Above old artificial bound
○ All negative
○ Equal values
○ Mixed values