About ++x

Question

Where to use ++x

Answer 1

It's pre increment:
It will increment the x first.

Suppose x=0
If you print (++x + x--):

Left to right.
It will first increment the x(i.e. ++x part), now x is 1.
Then from x-- part it will first assign x(i.e. currently 1) and then decrement(note that after decrement it will become 0).

From ++x part it's "1" and from x-- part it's also "1", so it will print "2".

Now if you print(x) you will get 0.

I don't know C# yet.. but I hope this helps.

Answer 2

++x is like a prefix operator.
It increments the entered value of x by 1 each time it is called;either once or n times in a loop..
Suppose x=1;
So ++x will be equal to 2.

Similarly;
--x is also a prefix operator.
It decrements the entered value of x by 1 each time it is called;either once or n times in a loop..
Suppose x=1;
So --x will be equal to 0.

x++ and x-- are known as postfix operators and do not affect the entered or submitted value of x.
If x=1;
x++ will also be equal to 1 and x-- will also be equal to 1.

So you use it where you have to shorten your code;
like if you have to use x=1 at a certain point in your code;
So wherever you need to use the value as 2;you can simply put ++x there instead of having to initializing a new Variable and assign it t be 2.Hence shortening the code and restricting the use of variables..

NOTE :
If you use the ++ operator as postfix like: x++. The original value of x is returned first then, x is incremented by 1.

Hope this helps!!!