[Solved]Why isn't it giving me the same result.

Question

There are two codes, one in a comment and one is not .I was expecting to get the same output but it didn't happen😑. Because one is in the short form of one .Can you please check the code and tell me why?🤔.When you run one then you put it in a comment and run the second.Thank you

https://code.sololearn.com/cO9kof7d34Dz/?ref=app

Answer 1

<Derrickee/>

in first case you (post)increment num: that's fine for the condition, but you output the incremented num...

in second case you increment num at end of loop iteration (after output it)...

you rather would do:

while (num <= 10) {
Console.WriteLine (num++);
}

Answer 2

Thanks guys😁.The should have notify us in the course .They just said the shorter much.

Answer 3

while (num++ <= 10) { here in post increament , first it will check value num<=10, then num=num+1; happens..
So 1st it will be like 0<=10 , after this num=1, so while printing, num=1
But in 2nd loop, you are first printing value then after incrementing...

<Derrickee/>
in post increment(num++) first value is used first then after it increments.
in preincrement (++num), first its value incremented then its new value used in statement..

Hope it helps...

Answer 4

<Derrickee/> its here mentioned in prefix, post fix topic
https://www.sololearn.com/learning/2590/