In programming, we use lists to store sequences of related data. We often want to perform the same operation on every element in a list, like displaying each element or manipulating them mathematically. To do that, we can use a loop to iterate over each element, repeating the same code for each element.

Why do we use iteration?

Why is iteration important? Iteration allows us to simplify our algorithm by stating that we will repeat certain steps until told otherwise. This makes designing algorithms quicker and simpler because they don't have to include lots of unnecessary steps.

What is used for iteration?

Count-controlled loops

– used for iterating steps a specific number of times. It is used when the number of iterations to take place is already known. It uses a counter to keep track of how many times the set of commands has been repeated. Count-controlled loops are executed using FOR statements.