assigning random value to a variable

I got this code from the FAQ section... I've edited the values because I only need values from 1-6.

Code:

#include <stdio.h> 
#include <stdlib.h> 

int GetRand(int min, int max);

int main(void)
{
  int i, r;
  
  for (i = 0; i < 1; i++)
  {
    r = GetRand(1, 6);
    printf ("Your number is &#37;d\n", r);
  }
  
  return(0);
}

int GetRand(int min, int max)
{
  static int Init = 0;
  int rc;
  
  if (Init == 0)
  {
    srand(time(NULL));
    Init = 1;
  }

  rc = (rand() % (max - min + 1) + min);
  
  return (rc);
}

I don't understand how most of it works, especially the rand() and srand() functions, and the GetRand function. help?

http://www.eternallyconfuzzled.com/a..._art_rand.aspx

oooh... i get it now...! i'm just not sure if i can change the Init variable

Init is declared static - so it saves its value between calls.
It is used to call srand only once per program run