Loops are very powerful concept in programming as they allow the performance of complex and repetitive task without having to repeat lines of code each time the task is to be performed. An example of an application which uses a loop to control elements on a screen is a shopping application.
- Shopping applications are built to allow customers shop conveniently using their smart devices, pay and make decisions on retrieval of the selected items.
- Using a for loop, all selected items can be appended to a list which is called cart. This displays the number of selected items which is the number of items in the customer's cart.
- Using a loop, the cart is iterated and the total sum of the goods are displayed.
- If bonuses are available or discount for a certain product or groups, a loop can be used to effect the discount on the shopper's fee.
Therefore, most applications require the use of loops in other to avoid writing bulky and efficient programs.
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