每隔1s灯亮1次，并利用中断程序每隔2s数码管循环0~16 1次，程序改错

keil5报错第49行：‘_delay’:redefinition

#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
uchar temp,num,aa;
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}
void delay(uint z);
void main()
{ 
	num=1;
	TMOD=1;
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
	EA=1;
	ET0=1;
	TR0=1;
	temp=0xfe;
	P2=temp;
	dula=1;
	P0=table[0];
	dula=0;
	wela=1;
	P0=0xc0;
	wela=0;
	while(1)
	{
		delay(1000);
		temp=_crol_(temp,1);
		P2=temp;
		if(aa==40)
		{
			aa=0;
			dula=1;
			P0=table[num];
			dula=0;
			num++;
			if(num==16)
				num=0;
		}
	}
}
void delay(uint z)
{
	uint x,y;
	for(x=z;x>0;x--)
	for(y=110;y>0;y--);//大约1ms
}
void timer0() interrupt 1
{
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
	aa++;
}

这个程序是后7个灯常亮