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Computational thinking

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Question 53

Alister owns a small community bookshop.

This program analyzes the daily visitor counts over a 4-day period.

The only inputs from the data file to the program are: 145, 280, 75, and 195.

Complete the trace table showing the execution of the program with these four inputs.

You may not need to use all the rows in the table.

1 visitors = 0
2 low = 500
3 high = 0
4 line = ""
5
6 file = open("VisitorData.txt", "r")
7 for line in file:
8     visitors = int(line)
9     if visitors < low:
10        low = visitors
11    if visitors > high:
12        high = visitors
13 print(low, high)
14 file.close()
visitorslowhighDisplay
[6]
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Computational thinking Questions

  1. GCSE
  2. /Computer Science
  3. /Computational thinking

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