/* --------------------------------------------------------------------- 
** Figure 18.14:  Decoding an Internet address.
**                Print a 32-bit Internet IP address in standard form. 
** --------------------------------------------------------------------- 
*/
#include "tools.h"

#define  BYTEMASK  0xffL  /* The L is to make a long integer. */ 

void main( void )
{
    unsigned long ip_address;
    unsigned f1, f2, f3, f4;

    banner();
    printf( "\n Please enter an IP address address as 8 hex digits: " );
    scanf( "%lx", &ip_address );
    printf( "\t You have entered %08lx\n", ip_address );

    f1 = ip_address >> 24 & BYTEMASK;
    f2 = ip_address >> 16 & BYTEMASK;
    f3 = ip_address >>  8 & BYTEMASK;
    f4 = ip_address       & BYTEMASK;

    printf( "\t The IP address in standard form is: %i.%i.%i.%i\n", 
            f1, f2, f3, f4 );
    bye();
}