ARG help: Adding a Random Number Generator

Question

I'm currently making an ARG and am wondering how would I make the code below create two-five random number generations. Think that it could make like a number pad on a lock, you'd have to guess the number and if you succeed, it gives you a social media link that allows you to go deeper into the ARG.

/* rand example: guess the number */
#include <stdio.h>      /* printf, scanf, puts, NULL */
#include <stdlib.h>     /* srand, rand */
#include <time.h>       /* time */

int main ()
{
  int iSecret, iGuess;

  /* initialize random seed: */
  srand (time(NULL));

  /* generate secret number between 1 and 10: */
  iSecret = rand() % 10 + 1;

  do {
    printf ("Guess the number (1 to 10): ");
    scanf ("%d",&iGuess);
    if (iSecret<iGuess) puts ("The secret number is lower");
    else if (iSecret>iGuess) puts ("The secret number is higher");
  } while (iSecret!=iGuess);

  puts ("Congratulations!");
  return 0;
}

Answer 1

To generate random numbers that are 2, 3, 4 or 5 digits long, I'd do the following:

do
{
    iSecret = rand() % 100000;
} while (iSecret <= 10);

I hope this helps.