Programming implementation of P0 water lamp

#include 

#include
#inclde
void delay(unsigned char time) //The function must be declared, otherwise the following error will occur:
void main()
{
 P0 = 0xfe; //P must be uppercase
while(1)
{
 delay(200);
 P0 = _cror_(P0,1);
 }
}
void delay()
{
 unsigned char I,j;
    for(i=0;i<=time;i++)
       {
        for(j=0;j<=200;j++)
          { _nop_(); //Null instruction, calculated according to the machine cycle of the microcontroller
          }
       }
 }

#include
#include
#include
sbit P0_0 = P0^0; // I/O port definition method, the difference between the two, if not defined in this way, it will be said that it is not defined
    sbit P0_1 = P0^1;
   sbit P0_2 = P0^2;
   sbit P0_3 = P0^3;
   sbit P0_4 = P0^4;
   sbit P0_5 = p0^5;
   sbit P0_6 = P0^6;
   sbit P0_7 = P0^7;
void delay(unsigned char time); //Function declaration, important
void main()
{
   while(1)
{
P0_0 = 0;
delay(200);
P0_1 = 0;
delay(200);
P0_3 = 0;
delay(200);
P0_4 = 0;
delay(200);
P0_5 = 0;
delay(200);
P0_6 = 0;
delay(200);
P0_7 = 0;
delay(200);
}
void delay(unsigned char time)
{
   unsigned char i,j;
   for(i=0;i<=time;i++)
{
      for(j=0;j<=200;j++)
         {
           _nop_()
         }
     }
}
   
Control the on and off procedure:
#include// Port definition is already included in this header file, so P0 can be directly assigned
 #include
#include
void delay(unsigned char time);
void delay(unsigned char time)
{
   unsigned i,j;
   for(i=0;i<=time;i++)
      {
        for(j=0;j<=200;j++)
           {
            _nop_();
           }
       }
}
void main()
{
 while(1)
   {
    P0 = 0x00;
    delay(200);
    P0 = 0xff;
    delay(200);
   }
}