When should you use a loop?

When to Use Each Loop

Use a for loop to iterate over an array.
Use a for loop when you know the loop should execute n times.
Use a while loop for reading a file into a variable.
Use a while loop when asking for user input.
Use a while loop when the increment value is nonstandard.

What is meant by while loop?

A “While” Loop is used to repeat a specific block of code an unknown number of times, until a condition is met. If we (or the computer) knows exactly how many times to execute a section of code (such as shuffling a deck of cards) we use a for loop.

What is the difference between for and while loop?

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.

Why are while loops useful?

“while loops” execute blocks of code over and over again.

The advantage to a while loop is that it will go (repeat) as often as necessary to accomplish its goal.

Generic Syntax: while ( condition is true ) do something % Note: the “something” should eventually result % in the condition being false end

What is while and for loop?

The for loop is a repetition control structure that allows the programmer to efficiently write a loop that needs to execute a specific number of times. The while loop is a repetition control structure that executes target statements as long as the given condition is true. The for loop can be used when the number of iterations is known.

What is an example of while loop?

A while loop is a control flow structure which repeatedly executes a block of code indefinite no. of times until the given condition becomes false. For example, say, you want to count the occurrence of odd numbers in a range. Some technical references call it a pre-test loop as it checks the condition before every iteration.

When should you use a loop?