#include "utils.h"
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

void print_line(void) {
  printf("--------------------------------------------------\n");
}

void wait_enter(const char *msg) {
  if (msg)
    printf("%s", msg);
  int c;
  while ((c = getchar()) != '\n' && c != EOF)
    ;
}

char ask_yes_no(const char *msg) {
  char c = 'n';
  printf("%s", msg);
  if (scanf(" %c", &c) != 1)
    c = 'n';
  int flush;
  while ((flush = getchar()) != '\n' && flush != EOF)
    ;
  return c;
}

void now_str(char *buf, size_t size) {
  time_t t = time(NULL);
  strftime(buf, size, "%Y-%m-%d %H:%M:%S", localtime(&t));
}

size_t rand_index(size_t max) { return max ? (size_t)(rand() % max) : 0; }