linux c seek

off_t lseek(int fd, off_t offset, int whence);

#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>

int main() {
    int fd = open("example.txt", O_RDONLY);
    if (fd == -1) {
        perror("open");
        return 1;
    }

    off_t offset = lseek(fd, 10, SEEK_SET);
    if (offset == -1) {
        perror("lseek");
        close(fd);
        return 1;
    }

    char buffer[256];
    ssize_t bytesRead = read(fd, buffer, sizeof(buffer) - 1);
    if (bytesRead == -1) {
        perror("read");
        close(fd);
        return 1;
    }

    buffer[bytesRead] = '\0';
    printf("Data at offset 10: %s
", buffer);

    close(fd);
    return 0;
}