用C语言实现：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, 2, 3 }, arr2[] = { 4, 5, 6 },i,t;
    printf("arr1=");
    for (i = 0; i < 3; i++)
    {
        printf("%d ", arr1[i]);
    }
    printf("\n");
    printf("arr2=");
    for (i = 0; i < 3; i++)
    {
        printf("%d ", arr2[i]);
    }
    printf("\n");
    for (i = 0; i < 3; i++)
    {
        t = arr1[i];
        arr1[i] = arr2[i];
        arr2[i] = t;
    }
    printf("new arr1=");
    for (i = 0; i < 3; i++)
    {
        printf("%d ", arr1[i]);
    }
    printf("\n");
    printf("new arr2=");
    for (i = 0; i < 3; i++)
    {
        printf("%d ", arr2[i]);
    }
    printf("\n");
    system("pause");
    return 0;
}