Describe the differences between the pretest loops and the posttest loops. Why is the portion of a loop that contains statements that are executed based on conditions referred to as that? Why is it so vital to make sure that the counter and the accumulator variables are initialized correctly? Why should a piece of software close a file after it has finished working with it?
Types of Loop
Loops are the elements of programming in which a part of code is repeated a particular number of times. Loop executes the series of statements many times till the conditional statement becomes false.
Loops
Any task which is repeated more than one time is called a loop. Basically, loops can be divided into three types as while, do-while and for loop. There are so many programming languages like C, C++, JAVA, PYTHON, and many more where looping statements can be used for repetitive execution.
While Loop
Loop is a feature in the programming language. It helps us to execute a set of instructions regularly. The block of code executes until some conditions provided within that Loop are true.
Describe the differences between the pretest loops and the posttest loops. Why is the portion of a loop that contains statements that are executed based on conditions referred to as that? Why is it so vital to make sure that the counter and the accumulator variables are initialized correctly? Why should a piece of software close a file after it has finished working with it?
INTRODUCTION:
Pretest loop:
Evaluation of the Test Condition takes place before the execution of each statement included inside the loop. It is often referred to as testing at the top. If the test condition is not met, the words in the loop will never be executed. Consider the phrases "for" and "while."
Posttest loop:
The Test Condition is examined after the statements included inside the loop have been executed. Even if the test condition is not met, the comments included inside the circle will be carried out once. For instance, you could do a while. This practice is also known as bottom testing.
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