本帖最后由 ayanamishinji 于 2017-11-28 20:55 编辑

在教科书上看到的代码，不知道为什么temp11＝p1那一行报错，求原因和解决办法。
#include <reg51.h>
#define uchar unsigned char
sbit L1 = P1^0;
sbit L2 = P1^1;
sbit L3 = P1^2;
sbit L4 = P1^3;
uchar dis[16] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};
unsigned int time;
delay(time)
{
unsigned int j ;
for (j=0;j<time;j++)
{}
}
main ()
{
   uchar temp;
   uchar k,i;
   while(1)
   {   
        P1=0xef;
  for(i=0;i<=3;i=i++)
  {
   if (L1==0) P0 = dis[i*4+0];
   if (L2==0) P0 = dis[i*4+1];
   if (L3==0) P0 = dis[i*4+2];
   if (L4==0) P0 = dis[i*4+3];
   delay(500);
   temp11=P1;
   temp=temp|0x0f;
   temp=temp<<1;
   temp=temp|0x0f;
   P1=temp;
   }
  }
}