请教那位高手帮我看看错在哪里？？？
代码如下：
#include <reg51.h>
unsigned int temp=0;
bit pf2=0;
sbit P2_3=P2^3;
sbit P2_2=P2^2;
sbit P2_1=P2^1;
sbit P2_0=P2^0;
sbit P3_2=P3^2;
sbit P3_3=P3^3;
//中断子程序***********************************************
viod wai_zhong_duan_1() interrupt 2 using 2
{
pf2=~pf2;
}
//延时子程序********************************************
void delayms(unsigned char ms)
{
unsigned char i;
while(ms--)
{
for(i = 0; i <120; i++);
}
}
//显示子程序*********************************************
void display()
{
unsigned char seg[10]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};
unsigned char qing,bai,shi,ge;
int i;
i=temp;
qing=i/1000;
i=i-(qing*1000);
bai=i/100;
i=i-(bai*100);
shi=i/10;
i=i-(shi*10);
ge=i;
for(i=1;i<=50;i++)
{
P2_0=0;
P0=seg[qing];
delayms(1);
P2_0=1;
P2_1=0;
P0=seg[bai];
delayms(1);
P2_1=1;
P2_2=0;
P0=seg[shi];
delayms(1);
P2_2=1;
P2_3=0;
P0=seg[ge];
delayms(1);
P2_3=1;
}
}
//主程序***************************************************
main()
{
IE=0x84;
P3=0xff;
IT0=0;
pf2=0;
while(1)
{
display();
if(pf2==1) temp++;
if(temp==10000) temp=0;
if(P3_3==0) temp=0;
}
}
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