【C语言】将数组A中的内容和数组B中的内容进行交换。（数组一样大）

#include <stdio.h>

int main()

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

}

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