Turbo C : Compute Average

#include <stdio.h>

int Average(int i);
int main(){
         int num;
                 
                  do{
                           printf("Enter numbers ( -1 to quit ).\n");
                           scanf("%d",&num);
                          
                           if(num != -1)
                                    printf("The average is %d", Average(num));
                           printf("\n");
                  }while(num>-1);

                  return 0;
}

int Average(int i){
         static int sum = 0, count = 0;
         sum = sum + i;
         count++;
         return sum / count;
}