/* Simple demo of Linear Congruential Generator (LCG) concept */

#include <stdio.h>

#define MODULUS 57
#define MULTIPLIER 12
#define OFFSET 5
#define SEED 34

#define HOW_MANY 20

int state;

int mylcg()
  {
    state = (MULTIPLIER * state + OFFSET) % MODULUS;
    return( state );
  }

int main ()
  {
    int i, randval;

    state = SEED;

    /* generate several samples from the LCG */
    for( i = 1; i <= HOW_MANY; i++ )
      {
	randval = mylcg();
	printf("i = %d, randval = %d (%f)\n",
	       i, randval, 1.0*randval/MODULUS );
      }
  }