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We need a for loop because the while and do-while loops do not make use of a control variable. Although you can implement a counter inside a while or do-while loop, the use of a control variable is not as self-evident as it is in a for loop. Aside from the use of a control variable, a for loop is largely the same as a while loop. However, it is quite different to a do-while loop, which always executes at least one iteration of the loop before evaluating the conditional expression. In a for and while loop, the conditional expression is always evaluated before entering the loop, which may result in the loop not executing at all.

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What loop should no execute if the test expression is false to begin with?

for loop and while loop need the expression to be true for further execution of the program.


What are the advantages of using a foreach loop over a for or while loop for processing list elements?

foreach can simply replace for loop. for ex in perl, if you need to copy display an array, it will take only foreach $var(@arr). then print $var. no need of incrementing the index of array like for loop.


Compare Do-While with While Statements?

A Do-While loop looks like this: do { loop body } while (condition); and a While loop looks like this: while (condition) { loop body } The main difference is that the loop body is always run once in the Do-While loop, then the condition is checked to see if the loop should keep running. In a While loop, the condition is checked first, and it will not run the loop body at all if the condition is false.


When should use a while loop over a do loop?

Generally speaking a for loop looks like this:for(Initialization;condition;increment){Do Stuff}whereas a while loop looks like this:while(condition){Do Stuff}Before the while loop there should be some initialization and somewhere in the Do Stuff section there should be statements that change the condition. Those statements are analogous to the increment section of the for loop.


What is a loop type?

A Loop is a programming language construct that instructs the processor to repeat a sequence of operations a number of times until a specific condition is reached. There are different types of loops. They are: * for loop * while loop * do while loop

Related Questions

Why while loop devoloped while for loop already present?

These statements are equal parts of the language, none of them if the 'better' or the 'older'.


What loop should no execute if the test expression is false to begin with?

for loop and while loop need the expression to be true for further execution of the program.


What are the advantages of using a foreach loop over a for or while loop for processing list elements?

foreach can simply replace for loop. for ex in perl, if you need to copy display an array, it will take only foreach $var(@arr). then print $var. no need of incrementing the index of array like for loop.


What is a nested loop in java?

A nested loop is a (inner) loop that appears in the loop body of another (outer) loop. The inner or outer loop can be any type: while, do while, or for. For example, the inner loop can be a while loop while an outer loop can be a for loop.


What are the similarities of while loop and a do while loop?

They both loop


Why there is need of do while loop in c?

Not all programmers will be comfortable with a "do-while" loop, just as not all programmers will be comfortable with the "for(;;)" loop.Both are provided for your individual preference.


Compare Do-While with While Statements?

A Do-While loop looks like this: do { loop body } while (condition); and a While loop looks like this: while (condition) { loop body } The main difference is that the loop body is always run once in the Do-While loop, then the condition is checked to see if the loop should keep running. In a While loop, the condition is checked first, and it will not run the loop body at all if the condition is false.


The while loop is a type of loop?

Is loop


When should use a while loop over a do loop?

Generally speaking a for loop looks like this:for(Initialization;condition;increment){Do Stuff}whereas a while loop looks like this:while(condition){Do Stuff}Before the while loop there should be some initialization and somewhere in the Do Stuff section there should be statements that change the condition. Those statements are analogous to the increment section of the for loop.


What is a loop type?

A Loop is a programming language construct that instructs the processor to repeat a sequence of operations a number of times until a specific condition is reached. There are different types of loops. They are: * for loop * while loop * do while loop


Which pair of loops causes a statement or set of statements to repeat as long as a condition is true?

A while loop repeats until the condition becomes false, and may never execute: int a = 4; while (a > 5) { //Do something } or int a = 4; while (a > 0) { //Do something a--; }


Definition of do loop while in visual basic?

There are 3 type of loop 1 is for loop 2 is loop while 3 is loop untile