Identify byte ordering

Concept of Byte Ordering:

C Program to find Byte Ordering:

Using pointer:

#include
int main()
{
   unsigned int i = 1;
   char *c = (char*)&i;
   if (*c)
       printf("Little endian");
   else
       printf("Big endian");
   getchar();
   return 0;
}

Using union:

#include
 #include
void main()
{
   union {
      short s;
      char c[sizeof(short)];
   }un;
   un.s = 1;
   clrscr();
   if (un.c[0])
       printf("little-endian\n");
   else
       printf("big-endian\n");
   getch();
 }