What's wrong ?

using System;

public static class Globals
{
internal static void Main()
{
int n;
int a;
int b;
int k;
n = int.Parse(ConsoleInput.ReadToWhiteSpace(true));
a = int.Parse(ConsoleInput.ReadToWhiteSpace(true));
b = int.Parse(ConsoleInput.ReadToWhiteSpace(true));
k = int.Parse(ConsoleInput.ReadToWhiteSpace(true));
int[] h = new int[200005];
for (int i = 0; i < n; i++)
{
h = int.Parse(ConsoleInput.ReadToWhiteSpace(true));
h = ((h - 1) % (a + b)) / a;
}
sort(h, h + n);
int s = 0;
int i = 0;
for (; i < n; i++)
{
s += h;
if (s > k)
{
break;
}
}
Console.Write(i);
Console.Write("\n");
}
}

Написал такой код и выдает ошибку:
main.cs(31,7): error CS0136: A local variable named `i' cannot be declared in this scope because it would give a different meaning to `i', which is already used in a `child' scope to denote something else
Compilation failed: 1 error(s), 0 warnings