这个程序不知道问题出在哪里
#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
uchar num,temp,shi,ge;
sbit dula=P3^0;
sbit wela=P3^1;
uchar code table[]={0xc0,0xf9,0xa4,0xb0,
                    0x99,0x92,0x82,0xf8,
                    0x80,0x90,0x88,0x83,
                    0xc6,0xa1,0x86,0x8e};

void delay(uint z);
void main()
{
    temp=52;
    num=0;
    while(1)         
    {
        shi=temp/10;
        ge=temp%10;

        dula=1;
        P0=table[shi];
        dula=0;

        wela=1;
        P0=0x01;
        wela=0;
        delay(5);

        dula=1;
        P0=table[ge];
        dula=0;

        wela=1;
        P0=0xf2;
        wela=0;
        delay(5);   


    }
}
   
void delay(uint z)
{
    uint x,y;
    for(x=z;x>0;x--)
        for(y=110;y>0;y--);
}