What Is The Main Difference Between For And While Loop?

What is the difference between a for and while loop in Python?

Yes, there is a huge difference between while and for.

The for statement iterates through a collection or iterable object or generator function.

The while statement simply loops until a condition is False.

This gives us a data structure tailor-made for the for statement..

Is for loop faster than while?

In C#, the For loop is slightly faster. For loop average about 2.95 to 3.02 ms. The While loop averaged about 3.05 to 3.37 ms. As others have said, any compiler worth its salt will generate practically identical code.

Where do we use while loop?

The while loop is used to repeat a section of code an unknown number of times until a specific condition is met. For example, say we want to know how many times a given number can be divided by 2 before it is less than or equal to 1.

Which loop is faster in Python?

An implied loop in map() is faster than an explicit for loop; a while loop with an explicit loop counter is even slower. Avoid calling functions written in Python in your inner loop.

Can we write for loop in if condition?

No, you can’t. The if condition must evaluate to some boolean value, which doesn’t happen with this for loop.

How does while loop work?

In most computer programming languages, a do while loop is a control flow statement that executes a block of code at least once, and then either repeatedly executes the block, or stops executing it, depending on a given boolean condition at the end of the block.

What is the similarity and difference between for and while 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.

Why you would use a for loop versus a while loop?

Generally, use for loops when you have a defined range of values to iterate over. Use while loops when you aren’t iterating, or don’t know when your exit condition will be true.

What is Loop example?

A loop is used for executing a block of statements repeatedly until a particular condition is satisfied. For example, when you are displaying number from 1 to 100 you may want set the value of a variable to 1 and display it 100 times, increasing its value by 1 on each loop iteration.

Why do we use for loop?

In computer science, a for-loop (or simply for loop) is a control flow statement for specifying iteration, which allows code to be executed repeatedly. … For-loops are typically used when the number of iterations is known before entering the loop.

Can we use for loop inside while loop?

It is not mandatory to nest same type of loop. We can put a for loop inside a while loop or a do-while loop inside a for loop.