C语言不知道哪里数组越界了

#include<stdio.h>
#include<conio.h>
#include<malloc.h>
#define N 10
int E[N] = { 213,111,222,77,400,300,987,1024,632,555 };



void ShellSort(int R[], int n)
{
    int i, j, d;
    int tmp;
    d = n / 2;         //增量置初值
    while (d > 0)
    {
        for (i = d; i < n; i++)
        {
            tmp = R[i];     //对所有相隔d位置的记录组采用直接插入排序
            j = i - d;
            while (j >= 0 && tmp< R[j])
            {
                R[j + d] = R[j];            
                j = j - d;
            }
            R[j + d] = tmp;
        }
        d = d / 2;         //减小增量
    }
}


void main()
{
    int i, a[N];
    a[N] = E[N];
    printf("2019114402费骁谋\n");
    printf("初始数据序列为：\n");
    for (i = 0; i < N; i++)
        printf("%5d", E[i]);
    ShellSort(E, N);
    printf("\n希尔排序后数据序列为：\n");
    for (i = 0; i < N; i++)
        printf("%5d", E[i]);
    _getch();
}

此处越界

a[N] = E[N];

N 11