/*--------------------------------------------------*/
/*  Program chapter4_4                              */
/*                                                  */
/*  This program generates and prints ten random    */
/*  integers between user-specified limits.         */

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

int main(void)
{
   /*  Declare variables and function prototypes.  */
   unsigned int seed;
   int a, b, k;
   FILE *filep;
   int rand_int(int a, int b);

   /*  Get seed value and interval limits.  */
   filep = fopen("lab1.txt","w");
   printf("Enter a positive integer seed value: \n");
   scanf("%u",&seed);
   srand(seed);
   printf("Enter integer limits a and b (a<b): \n");
   scanf("%i %i",&a,&b);

   /*  Generate and print 100 random numbers to a file  */
   for (k=1; k<=100; k++)
   {
      fprintf(filep,"%i\n",rand_int(a,b));
   }
   printf("\n");

   /*  Exit program.  */
   return 0;
}
/*---------------------------------------------------*/
/*  This function generates a random integer         */
/*  between specified limits a and b (a<b).          */

int rand_int(int a, int b)
{
   return rand()%(b - a + 1) + a;
}
/*---------------------------------------------------*/