/*-------------------------------------------------------------------*/
/* sumstack.c                                                        */
/*-------------------------------------------------------------------*/

#include <stdio.h>

int main(int argc, char *argv[])
{
   int iFirst;
   int iSecond;
   int iSum = 0;
   int i;

   printf("Enter an integer:  ");
   scanf("%d", &iFirst);

   printf("Enter another integer that is greater than the first:  ");
   scanf("%d", &iSecond);

   for (i = iFirst; i <= iSecond; ++i)
      iSum += i;

   printf("The sum of all integers between the two is %d.\n", iSum);
   return 0;
}