大小端模式.md

大小端模式

#include "unp.h"

int main(int argc, char **argv)
{
	union 
    {
	  short  s;
      char   c[sizeof(short)];
    } un;

	un.s = 0x0102;
	printf("%s: ", CPU_VENDOR_OS);
	if (sizeof(short) == 2) 
    {
		if (un.c[0] == 1 && un.c[1] == 2)
			printf("big-endian\n");
		else if (un.c[0] == 2 && un.c[1] == 1)
			printf("little-endian\n");
		else
			printf("unknown\n");
	} else
		printf("sizeof(short) = %d\n", sizeof(short));
	exit(0);
}

https://www.codeleading.com/article/43023784934/