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");
}