find sum & average

#include<stdio.h>

int main()
{
  int a, b ,c;

   printf("Enter 1st number: ");
    scanf("%d", &a);

   printf("\nEnter 2nd number: ");
      scanf("%d", &b);

   printf("\nEnter 3rd number: ");
      scanf("%d", &c);

      int sum, average;

      sum = (a+b+c);

      average = (sum/3);

      printf("\nSum = %d", sum);

      printf("\nAverage = %d", average );

      printf("\n\n");

  return 0;
}