I m confused with the concept of for loop and while loop .

Question

what is the major difference between them? (because I think both can perform same functionality; we can also use for loop on the basis of user input (likewise while) and we can also perform the mathematical functions with while . so what is major difference I m confused 😣😧)

Answer 1

These are both looping structures and both can be used to perform loops.
The for loop is more convenient when you know how many iterations you will have, and provide that information right in the for components, like: for(i=0;i<10;i++) - here you define all the conditions for your loop, how many times it will run and the increment operation.
In a while loop you have to define the increment operation within the body, for example:
i=0;
while(i<10) {
//some code
i++;
}
So, basically, both can be used to achieve the same results. You have to use whichever makes the logic of your program more understandable on a case-by-case basis.
Hope this helps!

Answer 2

James Flanders is right. might I also add to wath he said that not only you can control how many iterations you will do with a for loop more straight forward but you can also control by what amout at each time. Now, you can also do that using a while loop but is more lines of code; less straight forward.

Answer 3

However you can also use a While loop to keep checking for a condition to be true or false. for example, for a page expecting user input you could say "while" there is no input keep checking, then when there is input the program will exit the while loop.

So while can have other uses than just replacing a for loop. it's useful for when you DON'T know when the "condition" will become true or false (whichever you are looking for), for example.

Answer 4

I m also

Answer 5

To be more clear, in for loop the iterations will be known. Whereas in while we cannot judge.

Answer 6

difference between them is just a syntax.