#include <stdio.h>

 #include<unistd.h>

 #include<sys/types.h>

 #include<sys/stat.h>

 #include<fcntl.h>

 #include <memory.h>

 int main()

 {

 int fd,size,FileLen = ,cur = ;

 char s [ ]="Linux Programmer!",buffer[]; 

 fd = open("/proc/uptime",O_RDONLY);

 while(){

     FileLen=lseek(fd,,SEEK_END);

     lseek(fd,SEEK_SET,);

 while(size = read(fd,buffer,sizeof(buffer))){

     cur +=size;

     printf("%d---%s\n",size,buffer);

     memset(buffer,,sizeof(buffer));

     if(cur>=FileLen){

         cur = ;

         break;

     }

 }

 lseek(fd,SEEK_SET,);

 sleep();

 }

 close(fd); 

 }