using System;
class MyArray {
int[] a;
int len;
public bool errflag;
public MyArray(int size) {
a = new int[size];
len = size;
}
public int Length {
get {
return len;
}
}
public int this[int index] {
get {
if(indexCheck(index)) {
errflag = false;
return a[index];
} else {
errflag = true;
return 0;
}
}
set {
if(indexCheck(index)) {
a[index] = value;
errflag = false;
}
else errflag = true;
}
}
private bool indexCheck(int index) {
if(index >= 0 & index < Length)
return true;
return false;
}
}
class MainClass {
public static void Main() {
MyArray myArray = new MyArray(5);
int x;
for(int i=0; i < myArray.Length; i++)
myArray[i] = i*10;
for(int i=0; i < myArray.Length; i++) {
x = myArray[i];
if(x != -1) Console.Write(x + " ");
}
Console.WriteLine();
}
}
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