Function main_loop

test/module/test_stdin.c:20–48

int line = 0;

void main_loop() {
  char str[10] = {0};
  int ret;

  errno = 0;
  while (errno != EAGAIN) {
    if (line == 0) {
      ret = fgetc(stdin);
      if (ret != EOF) putc(ret, stdout);
      if (ret == '\n') line++;
    } else if (line > 0) {
      ret = scanf("%9s", str);
      if (ret > 0) puts(str);
    }

    int err = ferror(stdin);
    if (err && errno != EAGAIN) {
      printf("error %s\n", strerror(errno));
      exit(EXIT_FAILURE);
    }

    if (feof(stdin)) {
      puts("eof");
      exit(EXIT_SUCCESS);
    }

    clearerr(stdin);
  }
}

int main(int argc, char const *argv[]) {
  fcntl(STDIN_FILENO, F_SETFL, O_NONBLOCK);