//gcc -o ee 64bit10.c 
#include<stdio.h>
int main()
{
   	unsigned char g[8] ={0x00,0x00,0x01,0x00,0x0,0x0,0x0,00};
 	int i;
	 unsigned char gg[] ={0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01};
	long int n;
	long int nn=0;
	for(int j=7; j>-1; j--)
	{	n = 0 ;
		for (i=0; i<8; i++)
	        {   n=n<<1;            // n<<1 failed.
		   if (gg[i] & g[j]){ n++;};
	  	}
	  nn = nn<<8;// multissply by 512
	nn = nn + n;
	}
          printf("\n   End conversion nn = %ld\n\n",nn);
		for (int i=0; i<8;i++){
	  	printf("%x ",g[i]); }		
	        printf("\n\n");
         return 0;
printf("\n   End conversion nn = %ld\n\n",nn);

		for (int i=0; i<8;i++){
	  	printf("%x ",g[i]); }		
	        printf("\n\n");
         return 0;
}
}