#include <stdio.h>

int main()
{
	int number ,count, sum, largest, smallest;

	count = 0;
	sum = 0;
	largest = 0;
	smallest = 100;

	do{
		do{
			printf("number %d = " , count+1);
			scanf("%d",&number);
			if (number < 0)
				printf("positive number only, please re-enter.\n");
		}while (number < 0);

		count = count+1;
		sum = sum + number;
		if(number> largest)
			largest = number;
		if(number < smallest && number!=0)
			smallest = number;


	} while (number != 0);

	count = count - 1;	
	printf("\nCount = %d\n", count);	
	printf("Sum = %d\n" , sum);
	printf("Average = %.2f\n" ,(float) sum/(float) count);
	printf("Largest = %d\n",largest);
	printf("Smallest = %d\n", smallest);


	return 0;
}