# Problem while I learning Arrray
**URL:** https://discourse.processing.org/t/problem-while-i-learning-arrray/991
**Category:** Coding Questions
**Created:** [June 15, 2018, 2:53pm UTC](https://discourse.processing.org/t/problem-while-i-learning-arrray/991 "2018-06-15T14:53:12Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@KangYunJae](https://discourse.processing.org/u/KangYunJae)
#### Post date: [June 15, 2018, 2:53pm UTC](https://discourse.processing.org/t/problem-while-i-learning-arrray/991/1 "2018-06-15T14:53:12Z")
**This Is Working Version of What I learn.**
```auto
float[] x = new float[5];
void setup() {
size(1080,720);
noStroke();
}
void draw() {
background(0);
x[0] += 0.5;
x[1] += 0.5;
x[2] += 0.5;
x[3] += 0.5;
x[4] += 0.5;
arc(x[0], 20, 20, 20, 0.52, 5.76);
arc(x[1], 40, 20, 20, 0.52, 5.76);
arc(x[2], 60, 20, 20, 0.52, 5.76);
arc(x[3], 80, 20, 20, 0.52, 5.76);
arc(x[4], 100, 20, 20, 0.52, 5.76);
}
```
**It’s not working version of What I learn**
```auto
float[] x = {-10,10,35,18,30};
//[{
//NO new float{}
void setup() {
size(1080,720);
noStroke();
}
void draw() {
background(0);
x[-10] += 0.5; //??
x[10] += 0.5;
x[35] += 0.5;
x[18] += 0.5;
x[30] += 0.5;
arc(x[-10], 20, 20, 20, 0.52, 5.76); //??
arc(x[10], 40, 20, 20, 0.52, 5.76);
arc(x[35], 60, 20, 20, 0.52, 5.76);
arc(x[18], 80, 20, 20, 0.52, 5.76);
arc(x[30], 100, 20, 20, 0.52, 5.76);
}
```
I was realize working version of my code doesn’t showing what I want excatly.
I was excepting bit spread arcs. but, processing shows message that my code have
problem with [-10]…
How can I fix it??
---
### Author:  [@cumulus](https://discourse.processing.org/u/cumulus)
#### Post date: [June 15, 2018, 3:25pm UTC](https://discourse.processing.org/t/problem-while-i-learning-arrray/991/2 "2018-06-15T15:25:04Z")
You are using the values instead of the arrays’ indices 😉
```auto
x[0] += 0.5; //??
x[1] += 0.5;
x[2] += 0.5;
x[3] += 0.5;
x[4] += 0.5;
arc(x[0], 20, 20, 20, 0.52, 5.76); //??
arc(x[1], 40, 20, 20, 0.52, 5.76);
arc(x[2], 60, 20, 20, 0.52, 5.76);
arc(x[3], 80, 20, 20, 0.52, 5.76);
arc(x[4], 100, 20, 20, 0.52, 5.76);
```
---
### Author:  [@GoToLoop](https://discourse.processing.org/u/GoToLoop)
#### Post date: [June 15, 2018, 4:46pm UTC](https://discourse.processing.org/t/problem-while-i-learning-arrray/991/3 "2018-06-15T16:46:03Z")
```auto
static final float SPD = .5;
static final int PACMEN = 5, FPS = 60, DIM = 20;
final float[] x = new float[PACMEN];
void setup() {
size(1200, 120);
frameRate(FPS);
noStroke();
}
void draw() {
background(0);
for (int i = 0; i < PACMEN; ++i)
arc(x[i] += SPD, i*DIM + DIM, DIM, DIM, .52, 5.76);
}
```
---
### Author:  [@KangYunJae](https://discourse.processing.org/u/KangYunJae)
#### Post date: [June 16, 2018, 1:48am UTC](https://discourse.processing.org/t/problem-while-i-learning-arrray/991/4 "2018-06-16T01:48:07Z")
Thanks a lot @cumulus! I didn’t know how easy and simple to solve this!
---
### Author:  [@KangYunJae](https://discourse.processing.org/u/KangYunJae)
#### Post date: [June 16, 2018, 1:50am UTC](https://discourse.processing.org/t/problem-while-i-learning-arrray/991/5 "2018-06-16T01:50:11Z")
Thanks @GotoLoop! this is really amazing too!! thanks!