交换数组

问题：交换两个数组的内容（数组的大小相同）

int main()
{
  int arr1[] = { 1,3,5,7,9 };
  int arr2[] = { 2,4,6,8,0 };
  int tmp = 0;
  int i = 0;
  int sz = sizeof(arr1) / sizeof(arr1[0]);
  for (i = 0;i < sz;i++)
  {
    tmp = arr1[i];
    arr1[i] = arr2[i];
    arr2[i] = tmp;
  }
  printf("arr1 = ");
  for (i = 0;i < sz;i++)
  {
    printf("%d ", arr1[i]);
  }
  printf("\n");//换行
  printf("arr2 = ");
  for (i = 0;i < sz;i++)
  {
    printf("%d ", arr2[i]);
  }
  return 0;
}