//-----------------------------------------------------------------------
// NAME: Dimitur Stoilov
// CLASS: XIa
// NUMBER: 8
// PROBLEM: #1
// FILE NAME: files.c
// FILE PURPOSE:
// Prints the first 10 lines of a file
// ...
//-----------------------------------------------------------------------
#include<stdio.h>
#include<sys/types.h>
#include<sys/stat.h>
#include<fcntl.h>
#include<unistd.h>

int main(){
    char buff;
    int count = 0;
    int w_result;
    int a=0;

    int fd = open("a.txt", O_APPEND);

    if(fd == -1){
        write(1, "error\n", 6);
    }

    int result = 1;

    while(result > 0){
        if(buff=='\n'){
            count++;
            if(count==10){
                break;
            }

        }
        result = read(fd, &buff, 1);
        int written = 0;

        while(written < result){
            w_result = write(STDOUT_FILENO, &buff, result - written);
            if(w_result == -1){
                write(1, "error\n", 6);
                return -1;
            }
            written += w_result;

        }

    }
    if(result == -1){
        write(1, "error\n", 6);
    }


    if(close(fd) == -1){
        write(1, "error\n", 6);
    }
}