swap(int *p1, int *p2)
{
    int temp;
    temp =  *p1;
    *p1 =  *p2;
    *p2 = temp;
}

main()
{
    int a, b;
    int *pointer1,  *pointer2;
    scanf("%d,%d", &a, &b);
    pointer1 = &a;
    pointer2 = &b;
    swap(pointer1, pointer2);
    printf("\nThe result is :%d,%d\n", a, b);
    getch();
}
我用的是Microsoft Visual C++ 6.0。输入12 13。结果却是-858993460 12