Question

Java programming

1. Write a program that reads an unspecified number of integers, determines how many positive and negative value 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

Here are sample runs: (red indicates a user input)

Enter an integer, the input ends if it is 0: 1 2 -1 3 0

The number of positives is 3

The number of negatives is 1

The total is 5 The average is 1.25

Continue? (y/n) y

Enter an integer, the input ends if it is 0: 0

No numbers are entered except zero.

Continue? (y/n) y

Enter an integer, the input ends if it is 0: 2 3 4 5 0

The number of positives is 4

The number of negatives is 0

The total is 14 The average is 3.5

Continue? (y/n) y

Enter an integer, the input ends if it is 0: -4 3 2 -1 0

The number of positives is 2

The number of negatives is 2

The total is 0

The average is 0.0

Continue? (y/n) n

Good bye!

My current code: ( I am missing the y/n prompts, and I am stuck on how to Keep it from crashing):

int positive = 0;
int negative = 0;
int total = 0;
double average = 0;
System.out.print("Enter an integer, the input ends if it is 0: ");
Scanner input = new Scanner(System.in);

for (int buffer = -1; buffer != 0; ) {

buffer = input.nextInt();
if (buffer > 0) positive++;
else if (buffer < 0) negative++;
total += buffer;
}
if (positive + negative == 0) {
System.out.println("No numbers are entered except 0");
System.exit(0);
}
average = total /(double)(positive + negative);
System.out.println("The number of positives is " + positive);
System.out.println("The number of negatives is " + negative);
System.out.println("The total is " + total);
System.out.println("The average is " + average);
System.out.println("Continue? (y/n): ");

Answer 1

ANSWER:-

import java.util.*;
class NumberProgram
{
   public static void main (String[] args)
   {
       Scanner sc=new Scanner(System.in); // scanner class for user input
       int positive,input,count; // variable declaration
       int negative; // variable declaration
       int total;   // variable declaration
       char ch; // variable declaration
       double average; // variable declaration
       do // do while loop begin
       {
           total=0; // initialize total with 0
           positive=0;
           negative=0;
           count=0;
           average=0;
           System.out.println("Enter an integer, the input ends if it is 0 : "); // give message for user for input
               do
               {
                   input=sc.nextInt(); // take integer input
                   if(input>0) // check input is greater than 0 or not
                   {
                   positive++; // count the positive number
                   count++;
                   }
                   if(input<0)    // check input is less than 0 or not
                   {
                   negative++;
                   count++;   // count the positive number
                   }
                   total+=input; // sum of all numbers
               }while(input!=0); // check input is 0 or not if input 0 then loop exit
               average=(double)total/count; // find average
               if (positive + negative == 0) { // check the numbers available or not
                   System.out.println("No numbers are entered except 0");
               }
               else
               {
                   System.out.println("The number of positive is "+positive); // print positive number count
                   System.out.println("The number of negative is "+negative); // print negative number count
                   System.out.println("The Total is "+total); // print total
                   System.out.println("The average is "+average); // print average
               }
       System.out.println("Continue? (y/n): "); // give message for user for choice
       ch= sc.next().charAt(0); // take input y/n
       }while(ch=='y' || ch=='Y'); // check user input if y then again exicute same process
       System.out.println("Good bye!"); // when program end then display good bye
   }
}

// If any doubt please comment

OUTPUT:-