大小端对齐验证

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main(void)
{
	unsigned int a = 0xaabbccdd;

	void * p = &a;
	printf("%xn", *(int *)p); //aabbccdd
	printf("%xn", *(unsigned short *)p); //ccdd
	printf("%xn", *((unsigned short *)p + 1)); //aabb
	printf("%xn", *(unsigned char *)p); //dd
										 //第0个元素代表低地址，如果打印dd, 说明低位放低地址，小端
	printf("%xn", ((unsigned char *)p)[0]);
	printf("%xn", ((unsigned char *)p)[1]);
	printf("%xn", ((unsigned char *)p)[2]);
	printf("%xn", ((unsigned char *)p)[3]);

	unsigned char* p1 = (unsigned char*)&a;
	printf("%x, %x, %x, %xn", *p1, *(p1 + 1), p1[2], p1[3]);


	printf("n");
	system("pause");
	return 0;
}

/*
aabbccdd
ccdd
aabb
dd
dd
cc
bb
aa
dd, cc, bb, aa

请按任意键继续. . .

*/

最后

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