秒表与倒计时C++程序

#include <iom16v.h>
#include <macros.h>
#define  uchar unsigned char
#define  uint  unsigned int

#pragma interrupt_handler miao:9
int num=0;
uint num2=0;
 static int z=0;
            

/************************************************

*********************************************
                                  下面为数码管驱动

程序
*************************************************

*********************************************/
//数码管为公阴极
const uchar table[10] = 

{0xd7,0x11,0xcd,0x5d,0x1b,0x5e,0xde,0x15,0xdf,0x5f,};


const uchar q[4] = {0xef,0xdf,0xbf,0x7f};//个十百千的位选信号


uchar p[4] = {0,0,0,0};//暂存

//uint fre=1234; 

//把要显示的数存入暂存区
void process(unsigned int i)
{
    p[0] = i/1000;
    i = i%1000;
    p[1] = i/100;
    i = i%100;
    p[2] = i/10;
    i = i%10;
    p[3] = i;
}
//显示函数
void display (void)
{
 uchar i;
 for(i=0;i<4;i++)
 {
  PORTA= q[i];//位选,共阴
  PORTB = table[p[i]];
 delay_nms(1);
 }
}
void displayT (void)
{
 uchar i;
 for(i=0;i<4;i++)

 {