Can you convert a for loop to a while loop?

Can you convert a for loop to a while loop?

You can always convert a for loop to a while loop. You can always convert a while loop to a for loop. The while loop and the do loop are equivalent in their expressive power; in other words, you can rewrite a while loop using a do loop, and vice versa.

Can you change i in a for loop Python?

5 Answers. A for loop assigns a variable (in this case i ) to the next element in the list/iterable at the start of each iteration. This means that no matter what you do inside the loop, i will become the next element. The while loop has no such restriction.

How do you convert a loop into a while loop?

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To convert a for loop to while loop we need to simply add the initialization statement before the while loop.

  1. /* For loop */ int i; for(i = 0; i < 10; i++) { }
  2. /* While loop */ while(*str++ != NULL) { length++;
  3. /* Do while loop */ do. { status = check_connection();
  4. /* For loop */ int i; for(i = 0; i < 10; i++) {

How do you convert a while loop?

In order to convert for loop to while loop in C just move the loop control variable above the while and Increment/decrement expression inside the loop….This is trivially converted to a while-loop like this:

  1. int i = 0;
  2. while (i < myArray. length) {
  3. System. out. println(myArray[i++]);
  4. }

How do you convert to a while loop?

How are while loops and for loops different in Python?

for loops is used when you have definite itteration (the number of iterations is known). while loop is an indefinite itteration that is used when a loop repeats unkown number of times and end when some condition is met.

How do I edit a for loop in Python?

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Use a for-loop and list indexing to modify the elements of a list

  1. a_list = [“a”, “b”, “c”]
  2. for i in range(len(a_list)): Iterate over numbers `0` up to `2`
  3. a_list[i] = a_list[i] + a_list[i] Modify value in place.

How do you increment a number in a for loop?

A for loop doesn’t increment anything. Your code used in the for statement does. It’s entirely up to you how/if/where/when you want to modify i or any other variable for that matter.

How do you convert a while loop to a for loop in Java?

The variable you want to use in while loop is to be initialized first and then you can use it in the while loop and write the body of your loop then decrement/increment the variable accordingly….FOR LOOP:

  1. for(i=1 ; i<=n ; ++i)
  2. {
  3. sum = sum + i;
  4. }

How do I create a loop in Python?

How to Create Loops in Python. In Python, and many other programming languages, you will need to loop commands several times, or until a condition is fulfilled. It is easy, and the loop itself only needs a few lines of code. 1. Open up your shell or program. This may be IDLE, or Stani’s Python Editor (SPE).

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Do until in VBA?

The Do Until Loop in Excel VBA is utilized, when one has a set of statements or actions to be repeated and repetition occurs until the condition evaluates to true, in other words, while the condition is false the repetition occurs.

What does while loop mean in Python?

Python While Loop. The Python While Loop is used to repeat a block of statements for given number of times, until the given condition is False. While loop start with the condition, if the condition is True then statements inside the while loop will be executed.

Do WHILE LOOP examples?

The various parts of the do-while loop are: Test Expression: In this expression we have to test the condition. If the condition evaluates to true then we will execute the body of the loop and go to update expression. Otherwise, we will exit from the while loop. Example: i <= 10