Finding out processor is little or big endian using c program

#include
int main()
{
int num=1;
char *cptr;

cptr = (char *)#

if (*cptr)
printf ("little endian\n");
else
printf ("big endian\n");
return 0;
}
...........................
for little endian it stores 00000001
for big endian it stores 00010000