What are the differences and similarities between for and while loops?

Question

Additional question: When is for used and when while?

Answer 1

Difference:
- while loop is condition dependent and does not necessarily need the content to be evaluated
- for loop requires content to iterate over

Similarity:
- both can iterate over a list or structure, but you must define your content to iterate through beneath the while condition whereas for loops define the content index and type at start

Answer 2

Their similarity is that both "while" and "for" are used for repeating a loop.
Their difference is that we use "for" when we know how many times we need to re-run the loop. When we don't know how many times are needed we use "while".|