Cs 1030 pseudocode question

Question

Write an algorithm in Computer Science pseudocode that reads a 0-terminated sequence of numbers from the user, one at a time. The final 0 entry should not be considered as part of the sequence (i.e., do not gather stats on it). Gather and display these four statistics on the sequence of numbers entered:

count of numbers entered count of numbers entered that are positive sum of numbers entered average value of the numbers entered

Write your adaptation using the CS 1810 pseudocode and use blank spaces to indent instructions, as needed.

The algorithm should have meaningful variable names and messages to the user. You may assume that all inputs from the user are numbers, that a 0 will eventually be entered, and that the sequence contains at least two numbers.

Answer 1

1. Initialization

DECLARE num, count, positiveCount, sum : INTEGER

DECLARE average : REAL

SET count = 0

SET positiveCount = 0

SET sum = 0

1. We declare variables to store the numbers, counts, sum, and average.
2. We initialize the counters and sum to 0.
3. Read numbers from the user until 0 is entered

REPEAT

DISPLAY "Enter a number (0 to stop): "

INPUT num

IF num != 0 THEN

SET count = count + 1

SET sum = sum + num

IF num > 0 THEN

SET positiveCount = positiveCount + 1

ENDIF

ENDIF

UNTIL num = 0

1. We use a REPEAT...UNTIL loop to keep reading numbers until the user enters 0.
2. Inside the loop, we prompt the user to enter a number.
3. We check if the entered number is not 0: If it's not 0, we increment the count, add it to the sum, and check if it's positive to increment the positive count.
4. Calculate the average

IF count > 0 THEN

SET average = sum / count

ENDIF

1. We calculate the average only if numbers were entered (count > 0) to avoid division by zero.
2. Display stats

DISPLAY "Number of numbers entered: ", count

DISPLAY "Number of positive numbers: ", positiveCount

DISPLAY "Sum of the numbers: ", sum

IF count > 0 THEN

DISPLAY "Average value: ", average

ENDIF

1. We display the count, positive count, sum, and average (if calculated).

Key Concepts:

1. Variables: Used to store values for later use.
2. Input/Output: DISPLAY for output, INPUT for user input.
3. Control Flow: REPEAT...UNTIL loop for repeating actions, IF for conditional execution.
4. Assignment: = operator to assign values to variables.
5. Arithmetic Operations: + for addition, / for division.
6. Comments: Lines starting with // explain the code without affecting execution.