Even/Odd sum,average

/*

program for read 10 numbers and calculate even sum,odd sum,even average and odd average.

variable's name stands for as : 

es=even sum, ea=even average, ec=even count

os=odd sum, oa=odd average, oc=odd count

*/

#include<stdio.h>

#include<conio.h>

int main()

{

 int arr[15];  

 int i;

 int es=0,ea,ec=0;

 int os=0,oa,oc=0;

 for(i=1; i<=10; i++)

 {

  printf("Enter %d number : ",i);

  scanf("%d",&arr[i]);

 }

 for(i=1; i<=10; i++)

 {

   if(arr[i]%2==0)

   {

      ec++;

      es=es+arr[i];

   }

   else

   {

      oc++;

      os=os+arr[i];

   }

 }

 ea=es/ec;

 oa=os/oc;

 printf("\nEven sum = %d",es);

 printf("\nEven average = %d",ea);

 printf("\nOdd sum = %d",os);

 printf("\nOdd Average = %d",oa);
 getch();
 return 0;

}

       Output of above program :

Enter 1 number : 1

Enter 2 number : 3

Enter 3 number : 5

Enter 4 number : 7

Enter 5 number : 9

Enter 6 number : 2

Enter 7 number : 4

Enter 8 number : 6

Enter 9 number : 8

Enter 10 number : 10

Even sum = 30

Even average = 6

Odd sum = 25

Odd Average = 5