/*
(Count positive and negative numbers and compute the average of numbers) Write
a program that reads an unspecified number of integers, determines how many
positive and negative values have been read, and computes the total and average of
the input values (not counting zeros). Your program ends with the input 0. Display
the average as a floating-point number.
*/
import java.util.Scanner;
public class Exercise_05_01 {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);

int positives = 0; // Count the number of positive numbers
int negatives = 0; // Count the number of negative numbers
int count = 0; // Count all numbers
double total = 0; // Accumulate a totol
// Promopt the user to enter an integer or 0 to exit
System.out.print("Enter an integer, the input ends if it is 0: ");
int number = input.nextInt();
if (number == 0) { // Test for sentinel value
System.out.println("No numbers are entered except 0");
System.exit(1);
}
while (number != 0) {// Test for sentinel value
if (number > 0)
positives++; // Increase positives
else
negatives++; // Increase negatives
total += number; // Accumulate total
count++; // Increase the count
number = input.nextInt();
}

// Calculate the average
double average = total / count;

// Display results
System.out.println(
"The number of positive is " + positives +
"\nThe number of negatives is " + negatives +
"\nThe total is total " + total +
"\nThe average is " + average);
}
}