使字符串从两边往中间出现

# include <stdio.h>
int main()
 {
    char arr1[] = "jiakesinb!!!";
    char arr2[] = "############";
    int left = 0;//左下标
    //int right = sizeof(arr1) / sizeof(arr1[0])-2;//右下标，数组最后有“\0”
    int right = strlen(arr1)-1;//右下标
    while (left<=right)
    {
        arr2[left] = arr1[left];
        arr2[right] = arr1[right];
        printf("%s\n", arr2);
        left++;
        right--;
    }
    return 0;
}