判断bigendian还是littleendian

#include<stdio.h>
#include<strings.h>
int isbigendian()
{
   unsigned short flag = 0x1122;
   if(*((unsigned char*) &flag) == 0x11)
      return 1;
   else
      return 0;
}

main()
{
   if(isbigendian())
      printf("big-endian/n");
   else
      printf("little-endian/n");
}