Using 51 single chip microcomputer to make breathing light

//Crystal oscillator 11.0592
//The light changes gradually from bright to dark under the control of the microcontroller, and it feels like breathing
//This example uses a digital tube and an LED light to achieve a breathing effect on the 51hei-5 development board
//File download: http://www.51hei.com/f/fxd.rar
#include
#define uint unsigned int
#define uchar unsigned char

sbit D1=P0^7;

fly sr;
flying jf;

uchar code table[]={
0,1,2,3,4,5,6,7,8,9,10,
11,12,13,14,15,16,17,18,
19,20,21,22,23,24,25,26,27,
28,29,30,31,32,33,34,35,36,
37,38,39,40,41,42,43,44,45,
46,47,48,49};

void light(uchar num);
void delay(uint z);

void main()
{
//Set the counter
//Select counting method 1
 TMOD = 0x11;
//Write the initial value to the counter
 TH0 = 0;
 TL0 = 0;
////////////////////
//Operate the microcontroller
// Enable CPU interrupt
 EA = 1;
///////////////////
// Enable timer T0 interrupt
 ET0 = 1;
//Start the counter
 TR0 = 1;
//Operation diode
P1=0;
 while(1)
 {
  if(sr<50)
   light(sr);
  else sr=0;
 }
}
//Sub function
void light(uchar num)
{
 do not fly;
 D1 = 0;
 tme = table[num];
 delay(tme);
 D1 = 1;
 delay(49-tme);
}
//Interrupt function
void time () interrupt 1
{
//Increment the independent variable
 if (jf<2)
  {
   jf++;
   TH0 =0;
   TL0 = 0;
  }
 
 if (jf==2)
  {
//Write initial value
   jf=0;
   
   TH0 = 254;
   TL0 = 254;
   sr++;
  } 
}
void delay(uint z)
{
 uint x,y;
 for(x=10;x>0;x--)
  for(y=z;y>0;y--);
}