这样不会造成机构体溢出么
#include <stdio.h>
#include <stdlib.h>
#include <dos.h>
void main(void)
{
struct CMOS /*一共32项*/
{
unsigned char current_second;
unsigned char alarm_second;
unsigned char current_minute;
unsigned char alarm_minute;
unsigned char current_hour;
unsigned char alarm_hour;
unsigned char current_day_of_week;
unsigned char current_day;
unsigned char current_month;
unsigned char current_year;
unsigned char status_registers[4];
unsigned char diagnostic_status;
unsigned char shutdown_code;
unsigned char drive_types;
unsigned char reserved_x;
unsigned char disk_1_type;
unsigned char reserved;
unsigned char equipment;
unsigned char lo_mem_base;
unsigned char hi_mem_base;
unsigned char hi_exp_base;
unsigned char lo_exp_base;
unsigned char fdisk_0_type;
unsigned char fdisk_1_type;
unsigned char reserved_2[19];
unsigned char hi_check_sum;
unsigned char lo_check_sum;
unsigned char lo_actual_exp;
unsigned char hi_actual_exp;
unsigned char century;
unsigned char information;
unsigned char reserved3[12];
} cmos;
char i;
char *pointer;
char byte;
pointer = (char *) &cmos;
for (i = 0; i < 0x34; i++)/*此处循环52次（52> 32），为什么不会造成指针越界呢？新手，请大家指点一下。*/
{
outportb(0x70, i);
byte = inportb(0x71);
*pointer++ = byte;
}
clrscr();
printf( " This program is to get the CMOS infomation.\n ");
printf( " Some of the CMOS information is as follows.\n ");
printf( " > > Current date: %d/%x/%x ", cmos.current_month,
cmos.current_day, cmos.century);
if(cmos.current_year <10)
printf( "0%d.\n ",cmos.current_year);
else
printf( "%d.\n ",cmos.current_year);
printf( " > > Current time: %d:%d:%d.\n ", cmos.current_hour,
cmos.current_minute, cmos.current_second);
printf( " > > Shutdown type: %d.\n ", cmos.shutdown_code);
printf( " > > Hard disk type %d\n ", cmos.fdisk_0_type);
printf( " Press any key to quit... ");
getch();
return;
}
循环到第33次的时候，指针不是指向了结构体外部了么？byte付给谁了啊？
[解决办法]
unsigned char status_registers[4]; //+3 bytes
unsigned char reserved_2[19]; //+18 bytes
unsigned char reserved3[12]; //+11 bytes
共32+3+18+11 = 64bytes
