/* From: "COMPUTATIONAL PHYSICS, 2nd Ed" 
   by RH Landau, MJ Paez, and CC Bordeianu 
   Copyright Wiley-VCH, 2007.
   Electronic Materials copyright: R Landau, Oregon State Univ, 2007;
   MJ Paez, Univ Antioquia, 2007; & CC Bordeianu, Univ Bucharest, 2007
   Support by National Science Foundation                              
*/                                                     
//  call.c: Creates pseudo-random numbers using drand48 or rand
 
#include <stdio.h>
#include <stdlib.h>
#include <math.h>

// if you don't have drand48 uncomment the following two lines 
//    #define drand48 1.0/RAND_MAX*rand 
//    #define srand48 srand                  
      
main()  {
	
   int i, seed;
   double x;
	 
   printf("enter seed\n");                        // user plants seed
   scanf("%i", &seed);
   srand48(seed);                                    // seed drand 48
   for (i=1; i<=10; i++)  {
      x = drand48();                 // random number between 0 and 1
      printf("Your random number is: %f\n",x);
   }
}