Thread: Difference between for and while loop

Hi,

Can anybody please explain the Difference between for and while loop?

Thanks
Ankit

Originally Posted by Elysia

Code:

for (a; b; c) x;
<===========>
a;
while (b)
{
    x;
    c;
}

Hi,

is there any technical difference apart from the structure of the two loops as i can guess that the condition is the same, though iteration is a part of the loop body in while loop whereas the declaration/initialization is done before the while loop.

Thanks

Ankit

Originally Posted by Salem

They're not entirely interchangeable.

In a for loop, 'b' can be empty whereas a while loop must always have an expression.

The continue keyword works differently as well, where 'c' is evaluated in the for loop, but skipped in the while loop.

Hi,


Thanks a lot for the information.

where would one like to use a while loop instead of the for loop.

thanks
ankit

Originally Posted by ankiit

Hi,


Thanks a lot for the information.

where would one like to use a while loop instead of the for loop.

thanks
ankit

Where it would be logically simpler to structure some code like that...
For example, when you want to run the loop as long as some condition (or a boolean value) is true, but has no counting (like from 0 to 100) going on.