将两个数组内容向中间靠拢交换

int main(){    char arr1[]="I Have A Dream!!!";    char arr2[]="*****************";    printf("%s\n",arr2);    int left=0;    int right=strlen(arr1)-1;    while(left<=right)    {        Sleep(1000);        arr2[left]=arr1[left];        arr2[right]=arr1[right];        right--;        left++;        printf("%s\n",arr2);    }    return 0;}