#include <iostream>
using namespace std;

#define error_no_line -1
#define success 0
#define MAX_LINE 4096

int get_line(int fd, char *line, int line_no, int max_length, int* line_len) {
    int i = 1;
    char c;
    while ( (i < line_no) && read(fd, &c, 1)==1) {
        if (c == '\n')
            i++;
    }

    if (i < line_no)
        return error_no_line;

    bytesRead = 0;
    i = 0;
    while (i < max_length && (read(&fd, &line[i], 1)==1) && (line[i] != '\n'))
        i++;
    *line_len = i;
    return success;
}

int main(int argc, char** argv) {
    int line_len;
    char line[MAX_LINE];

}