Question: What is the difference between a counter-controlled loop and a sentinel-controlled loop?
What is the difference between a counter-controlled loop and a sentinel-controlled loop?
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In programming loops are often used to repeatedly execute a block of code Depending on the conditional check used to control the loop execution loops can be categorized as either countercontrolled or sentinelcontrolled Lets define and compare these two types of loops 1 CounterControlled Loop A countercontrolled loop is a loop that uses a counter to control its repetition This counter will increase or decrease with each iteration of the loop The loop continues until the counter reaches a specified value A common example of a countercontrolled loop in programming is the for loop Here is a simple example in Python python for i in range5 i is the counter printi In the above code the loop will run 5 times i is acting as the counter starting at 0 and increasing by 1 with each iteration until it reaches 4 2 SentinelControlled Loop A sentinelcontrolled loop also known as a flagcontrolled loop continues until a certain special value known as the sentinel value is reached or detected This sentinel value signifies the end of the loop Often these loops are while or dowhile loops where the loop continues to execute as long as the data is valid or a specific condition ... View full answer
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