What is post-increment and pre-increment do, and how do each affect this code.

Question

/don't tell me to read the other discuss questions, because this is my question
int num = 0;
while(++num < 6)
Console.WriteLine(num);

or

int num = 0;
while(++num < 6)
Console.WriteLine(num);

Answer 1

umm both those are the same...

pre and post fix operators arent as complicated as they seem.. if the operator is before the variable (ie ++a: prefix) the operation is done before the expression they are included in is evaluated.

if the operator is after (a++) the variable it is applied after the expression is evaluated.

This question is asked repeatedly every day. this is why you will get "omg search the q&a" as the answer when asking about it.

Answer 2

Consider this 2 examples:

int a=2;
int b=++a;

Here a is incremented before its value is assigned to b, so a=3 and b=3;

int a=2;
int b=a++;

And here the value of a is first assigned to b and then a is incremented so b=2 and a=3

This is the example from one of the courses.

Answer 3

both post and per increment increase the operand value by 1, difference is in their preference when it comes to operator precedence.
pre-increment is most prior
post-increment is least prior