#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>

int main() {

    extern int errno;

    char file[] = "temp";
    
    // opening file
    int desc_f = open(file, O_RDONLY);
    if (desc_f < 0) {
        perror("ERROR opening f_write.txt");
        exit(errno);
    }

    // reading to file

    while (1) {
        int buf;
        for (int i = 0; i < 10; i++) {
            int ret_read = read(desc_f, &buf, sizeof(int));
            if (ret_read < 0) {
                perror("ERROR reading to f_write.txt");
                exit(errno);
            }
            printf("%d\n", buf);
        }
        sleep(1);
        system("clear");
        lseek(desc_f, 0, SEEK_SET);
    }

    // closing files

    int ret_close = 0;
    ret_close = close(desc_f);
    if (ret_close < 0) {
        perror("ERROR closing f_read.txt");
        exit(errno);
    }

    return EXIT_SUCCESS;
}