查看位元組順序 from《深入理解電腦系統》 p39

#include <stdio.h>#include <stdlib.h>typedef unsigned char *byte_pointer;voidshow_bytes( byte_pointer start, int len ){        int i;        for ( i = 0; i < len; i++ )                printf( " %.2x", start[i] );        printf( "\n" );}voidshow_int( int x ){        show_bytes( ( byte_pointer )&x, sizeof( int ) );}voidshow_float( float x ){        show_bytes( ( byte_pointer )&x, sizeof( float ) );}voidshow_pointer( void* x ){        show_bytes( ( byte_pointer )&x, sizeof( void* ) );}voidtest_show_bytes( int val ){        int ival = val;        float fval = ( float )val;        int *pval = &ival;        show_int( ival );        show_float( fval );        show_pointer( pval );}intmain( void ){        test_show_bytes( 12345 );        exit( 0 );}