Here, the main difference between a while loop and do while loop is that while loop check condition before iteration of the loop. On the other hand, the do-while loop verifies the condition after the execution of the statements inside the loop. ... Conversely, the do while loop is called the exit controlled loop.

What is difference between while loop and do-while loop?

The difference lies in the place where the condition is tested. The while loop tests the condition before executing any of the statements within the while loop whereas the do-while loop tests the condition after the statements have been executed within the loop.

Why do-while loops are bad?

The principal complaint about while loops is that they may never end: while (true) { ... } This is the infinite loop. If it ever happens that you construct an infinite loop in code, that code will become non-responsive at run time.

What is the disadvantage of do-while loop?

While you're guaranteed to have the instructions executed at least once before evaluating your exit condition. The disadvantage of these control structures that poses a serious problem is when you don't include a way of changing your condition to a negative value to exit the loop ever, leading to an infinite loop.

Do While and while loop are same true or false?

Explanation: do-while loop is exit controlled loop whereas while loopis an entry controlled loop.

do-while Loop

41 related questions found

When we use do-while loop?

Using the do-while loop, we can repeat the execution of several parts of the statements. The do-while loop is mainly used in the case where we need to execute the loop at least once. The do-while loop is mostly used in menu-driven programs where the termination condition depends upon the end user.

What is the difference between while and do while explain the switch case?

While loop is executed only when given condition is true. Whereas, do-while loop is executed for first time irrespective of the condition. After executing while loop for first time, then condition is checked.

What is while and do-while?

The general syntax of the do - while is: do { statement(s) } while (expression); Instead of evaluating the expression at the top of the loop, do - while evaluates the expression at the bottom. Thus, the statements within the block associated with a do - while are executed at least once.

What is the similarity between while and do-while loop?

The similarites are that each has a body of code that is executed perhaps multiple times. This is usually called the “loop body”. They also have a “while” portion that tests a condition that determines whether the loop should be executed another time.

What is do while loop with example?

The do while loop is an exit controlled loop, where even if the test condition is false, the loop body will be executed at least once. An example of such a scenario would be when you want to exit your program depending on the user input.

Is for loop faster than while loop?

The main reason that While is much slower is because the while loop checks the condition after each iteration, so if you are going to write this code, just use a for loop instead.

Do-while loop can also be called?

Do while loop can also called an exit-controlled loop . Explanation: Important thing in this loop is this, it check the condition at the end of loop.it means that the loop is executed at least one time even the condition is false.

Do-while and while loop are same Brainly?

do-while loop is similar to while loop, however there is a difference between them: In while loop, condition is evaluated first and then the statements inside loop body gets executed, on the other hand in do-while loop, statements inside do-while gets executed first and then thecondition is evaluated.

Which statement is not true about do-while loops?

Which statement is NOT true about do-while loops. The number of times a do-while loop is executed is dependent upon the value of the counter variable.

Where do we use while loop and for loop?

In general, you should use a for loop when you know how many times the loop should run. If you want the loop to break based on a condition other than the number of times it runs, you should use a while loop.

Do while loops sum numbers?

Using do-while Loop

• #include <stdio.h>
• #include <conio.h>
• void main()
• {
• int num, i, sum = 0; // initialize and declare the local variables.
• printf("Enter a positive number: ");
• scanf("%d", &num); // take a value up to which find the sum of natural number.
• i = 0;

What is do-while loop in C++ with example?

C++ do-while Loop Example

• #include <iostream>
• using namespace std;
• int main() {
• int i = 1;
• do{
• cout<<i<<"\n";
• i++;
• } while (i <= 10) ;

Do While VS do until?

A "Do While" loop statement runs while a logical expression is true. This means that as long as your expression stays true, your program will keep on running. Once the expression is false, your program stops running. A "Do Until" loop statement runs until a logical statement is true.

Do While loop is entry controlled loop?

For loop, Foreach loop and while loops are examples of entry controlled loops, whereas do-while loop is an example of exit controlled loop.

Do while loops exercise in C?

C do while loop

• execute the code within the braces.
• check the condition (boolean expression) and if it is true, go to step 1 and repeat.
• this repetition continues until the condition (boolean expression) evaluates to false. See the flowchart :

What are the similarity and difference between while loop and for loop?

Summary – for vs while Loop

There are repetition control structures to achieve this tasks. Two of them are for and while loop. The difference between for and while loop is that the for loop is used when the number of iterations is known and the while loop is used when the number of iterations is not known.

What are the similarity and difference between a do while and do until loop?

The only difference between do while and do until is that the first one loops as long as the condition is true, while the second one loops as long as the condition is false.