Why x++ before adding sum += ... ?? Thought it starts with zero not with one?

Question

..

Answer 1

if you have sum += x++; than it's ok because x++ eveluate exspression and then increment value.
In other case this will work good:
sum += x;
x++;

Answer 2

don't want other languages but ty

Answer 3

ooooooooohhhhhh thank you 😊

Answer 4

int [ ] myArr = {6, 42, 3, 7};
int sum=0;
for(int x=0; x<myArr.length; x++) {
sum += myArr[x];
}
System.out.println(sum);

Answer 5

that's the program I have

Answer 6

and there i have X++ and then sum+=myArr[X]

Answer 7

okay why isn't it at that point??