/*
+------------------------------------------------------------------------+
| 小端存储: 低地址存放低位数据； |
| 例： int型数 0x12 34 56 78 |
| | | |
| 高位 低位 |
| |
| ------------------------------------------ |
| 1 |
| --------------------- |
| &a -> 0x0022FF54 -> 12345678 |
| --------------------- |
| &a[0] -> 0x0022FF54 -> 78 |
| &a[1] -> 0x0022FF55 -> 56 |
| &a[2] -> 0x0022FF56 -> 34 |
| &a[3] -> 0x0022FF57 -> 12 |
+------------------------------------------------------------------------+
*/
#include <stdbool.h>
void test()
{
int a = 0x12345678;
printf("&a \t-> 0x%p\t-> %x\n"
"---------------------\n"
"&a[0]\t-> 0x%p\t-> %x\n"
"&a[1]\t-> 0x%p\t-> %x\n"
"&a[2]\t-> 0x%p\t-> %x\n"
"&a[3]\t-> 0x%p\t-> %x\n",
&a, a,
(char*)&a + 0, *((char*)&a + 0),
(char*)&a + 1, *((char*)&a + 1),
(char*)&a + 2, *((char*)&a + 2),
(char*)&a + 3, *((char*)&a + 3));
}
bool is_little_endian(void)
{
int a = 0x1;
return *(int *)&a == a;
}
int main(int argc, char *argv[])
{
printf("%d\n", is_little_endian());
puts("---------------------");
test();
return 0;
}