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#
Authors:
Tony Gaddis
Chapter:
Repetition Structures
Exercise:
Checkpoint
Question:3 | ISBN:9780132576376 | Edition: 2

Question

What is a count-controlled loop?

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Answer

In Python, a count-controlled loop is a type of loop structure that iterates a specific number of times based on a counter variable.

  • The counter variable keeps track of the number of iterations and is incremented or decremented after each iteration.
  • The loop continues until the counter variable reaches a certain value or meets a specific condition.
  • The 'for' loop is commonly used for count-controlled loops. It allows you to iterate over a sequence of elements or execute a block of code a fixed number of times.

For example code:

for i in range(1, 6):  # Loop from 1 to 5 (inclusive)
    print("Iteration:", i)

Output of the code:

Iteration: 1
Iteration: 2
Iteration: 3
Iteration: 4
Iteration: 5

Explanation of the code:

  • Here, the loop will execute five times because the range(1, 6) function generates a sequence of numbers from 1 to 5. The loop variable i takes the value of each number in the sequence, and the print statement displays the current iteration number.
  • You can modify the loop to perform different actions based on the iteration count or use the counter variable in conditionals to control the loop's behavior.
  • The Count-controlled loops are useful when you need to repeat a block of code a specific number of times, such as when processing a fixed-size collection or performing a task iteratively.
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