为什么延时程序不好使 数码管全都是八啊

#include

#define uint unsigned int

#define uchar unsigned char

sbit du=P2^6;

sbit we=P2^7;

uchar number ;

uchar code table[]={

0x3f,0x06,0x5b,0x4f,

0x66,0x6d,0x7d,0x07,

0x7f,0x6f,0x77,0x7c,

0x39,0x5e,0x79,0x71};

void delay(uint);

void main()

{

we=0;

P0=0x00;

we=1;

while(1)

{

for(number=0;number<16;number++)

{

du=0;

P0=table[number];

delay(500);

du=1;

}

}

}

void delay(uint x)

{

uint i,j;

for(i=x;i<0;i--)

for(j=110;j<0;j--);

}