/* File: input3.c

   Have the user type in a bunch of numbers
*/

#include <stdio.h>

#define MAX_SIZE 20 

int main() {
   int i, n, r ; 
   double average, num ;

   // declare and initialize array
   int A[MAX_SIZE]  ;

   printf("Enter your numbers. End with ctrl-D.\n") ;

   n = 0 ; 
   i = 0 ;

   while (1) {
      printf("A[%d] = ", i) ;

      r = scanf("%d", &A[i] ) ;
      if ( r <=0 ) {
          printf("The end reached.\n") ;
          break ;
      }

      i = i + 1 ;
 
      if (i >= MAX_SIZE) {
         printf("No more numbers!!\n") ; 
         break ;
      }
   }

   n = i ;
   printf("n = %d\n", n) ;

   int sum = 0 ; 

   for (i = 0 ; i < n ; i++) {
      sum = sum + A[i] ;
   }

   num = n ;               // num is double
   average = sum / num ;   

   printf ("The average value entered is: %f\n", average) ;


   return 0 ;
}