Explain this code

Question

How come it's an infinite loop that outputs 0 every loop?
https://code.sololearn.com/cVSQ9WCtXv7C/?ref=app

Answer 1

Here in this code,
You intialized variable i with 0.
Now when you want to increment it you use i=i++ which always initialize with same value 0.
Because of that post increment operator which always initialize first and then do increment, so it will never increase the value of i.

You can use pre increment operator like this i=++i. Or you can use i=i+1

Answer 2

There are two types of increment :-

Pre-increment and Post-increment.
It has a basic property that ,
Post increment add after one value if the variable is existing at the outside of loop.
For eg:-
while (i < 0) // consider i = 0
{
i++;// here value of i is 0.
}
When it comes out of the loop, its value will be one.

Pre increment will increment value by one before some process.
Eg. :-
while ( i < 5 ) // again consider i =0
{
++i; // here, i = 1
}
And it will be accesible by all the steps.
Otherwise like post increment its value will by default.
Here, having two examples:-
One is your code which uses by default assigned value.

https://code.sololearn.com/c90QaRLuQTdy/?ref=app

And other is my solution.,,,

https://code.sololearn.com/c0rwOOjUR6Xb/?ref=app

Answer 3

Raj Chhatrala☑️ i still can't understand 😓... the println line is after the postincrement line so it should print the incremented value of i... and why is that incremented value not carried forward in the next iterations of the loop?

Answer 4

Bipin Tatkare - (B. R. T) thanks for answering... I understand pre and post increment. My confusion was that since the println line is AFTER the i=i++ line it should print the increased value... and then why is 0 printed everytime?