What is "for" used for

Answer 1

A lot of language are using this for loop.
Example.

c#

for ( int i = 0; i < 3; i++)
{
Console.WriteLine("Hello World);
}

// output is

Hello World
Hello World
Hello World

It's a loop and print a hello World 3 times.

Answer 2

For repeating tasks.

Answer 3

 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.



Answer 4

It is mainly used for accessing items in array and sometimes accessing each letter in String
e.g :
Accessing each element;
var a = [2,4,3,51,6]
for(let i = 0;i < a.length;i++){
console.log(a[i]);
}
//2,4,3,51,6
Accessing each letter in String.
var s = "Hello";
for(let i = 0;i < s.length;i++){
console.log(s.charAt(i));
}
//Hello

Answer 5

Almost everything...

Answer 6

Moises Mariscal

The classic use of for loop for beginners is like run over an arr to check or change or just look for something in the elements

Answer 7

"for" loop is used to repeat a set of of statements on the basis of condition.
It is often used when you know the no of iteration in advance like how many time will loop execute

Answer 8

for loop is basically used for repeating task while specifying the initial value of a variable with a condition to be satisfied and the increment/decrement factor. for loop can be nested to create different patterns. There are various uses of for loop.

Answer 9

For loops will basically just squeeze 3 of typical while loop's statements into 1 line.

For loops make it easier to make loops, where the amount of iterations is known.

While loops can be used for loops whose exit conditions might be more arbitrary.

Answer 10

For loop is used when we know how many times when we want to execute the code inside for

Answer 11

It is a kind of loop which is used to iterate a set of operation. It makes the code efficient.

Answer 12

Do you have an example?

Answer 13

Thanks

Answer 14

To repeat

Answer 15

Hello am new here, hoping to learn alot here

Answer 16

For repeating things many times how many you want

Answer 17

In Python it is for loop for iteration over a iterator like
x = [1,2,3,4,5]
For i in x:
print(i)

This code will give the following output
1
2
3
4
5

Answer 18

It is used for repeating given argument for the limited number of times say n

Answer 19

Easy! Use the "for" loop when you need to do a repeating task and you know the number of repetitions. E.g. i want to repeat this thing 4 TIMES.

for(i = 0; i < 4; i++) { do something }

But if you want to repeat and you don't know how many times, use the "while" loop. E.g. I want repeat this the number of times the user of my app input previously (even 0 times).

x = input( a number )
while ( i < x ) { do something }

But if you want to do something that repeats itself and you want to do it once at least, use "do while" loops.

do { something } while ( i < x )

I hope this can help you. Sorry if my english isn't the best😅

Answer 20

Moises Mariscal

When you want to repeat any sentence or task for number of times so you use ( for loop)

When you want to repeat any task or sentence for infinity till the condition gets right you use ( while loop )