/*
This program calculates an average of the numbers entered
*/
#include <stdio.h>

int Average(int i);

int main()
{
	int num;
	do{

	printf("Enter numbers ( -1 to quit ).\n");
	scanf("%d",&num);
	/*if number is not -1 print the average*/
	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; 
}