int main()
{
int a[4] = { 1,2,3,4 };
// 01 00 00 00 02 00 00 00 03 00 00 00 04 00 00 00
// ptr2 小端存储 ptr1
int* ptr1 = (int*)(&a + 1);
int* ptr2 = (int*)((int)a + 1);
//a是首元素地址,强制类型转化为整型,再加1,相当于地址向后偏移一个字节
printf("%x,%x", ptr1[-1], *ptr2);
//ptr1[-1]相当于 *(ptr-1) 整型取出四个字节
//%x打印十六进制
//即0x00000004,0x02000000
return 0;
}