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colourList = ["red","orange","yellow","green","blue","indigo","violet"]

PRINT ("The rainbow colours are: ")
FOR colour in colourList:
PRINT colour

This code uses:
SelectionIterationSequencing

3 answers

The code you provided primarily illustrates iteration. Let's break it down according to the three fundamental programming constructs you mentioned: selection, iteration, and sequencing.

  1. Sequencing: This refers to the execution of statements in the order they appear. In your code, the PRINT statement that outputs "The rainbow colours are: " is executed before the loop starts, so you have sequencing in play.

  2. Iteration: The loop (FOR colour in colourList:) demonstrates iteration. This loop goes through each item in the colourList array and executes the PRINT colour statement for each color in the list.

  3. Selection: There is no selection construct in your code. Selection typically involves conditional statements (like if statements) that allow for different paths of execution based on certain conditions.

So, while your code includes sequencing and iteration, it does not involve selection.

In summary:

  • The constructs used in your code are iteration (the FOR loop) and sequencing (the order of operations). Selection is not present in this code.
witch one

In your code snippet, the main programming construct being used is iteration.

The FOR loop iterates over each element in the colourList array and performs the action of printing each color. So, to clarify:

  • Iteration: The FOR loop that goes through each color in colourList.
  • Sequencing: The order of execution, starting with the PRINT statement before the loop and then executing the loop.
  • Selection: Not used in this code.

Thus, if you are looking for which specific construct is most prominently featured, the answer is iteration.