Thread: Need some simple Java Help

Can you post the code you have and any questions about the problems you are having with it?

#include <stdio.h>
#include <conio.h>
 
void main()
{
 int number;
 clrscr();
 
 printf("Enter a number\n");
 scanf ("%d", &number);
 
 if (number > 0)
  printf ("%d, is a positive number\n", number);
 else
  printf ("%d, is a negative number\n", number);
 
}

is what I have so far from problem one, also im not sure about how to get it to print if its 0.


And I am clueless on the second one (sorry for the inexperience)

#include <stdio.h>
#include <conio.h>
 
void main()
{
int number;
clrscr();
 
printf("Enter a number\n");
scanf ("%d", &number);
 
if (number > 0)
printf ("%d, is a positive number\n", number);
else
printf ("%d, is a negative number\n", number);
 
}

Have you posted the right code? The code in post#3 looks like C not java.

// Description: Determines positive, negative, sum, and average of integers. Ends when 0 input.

import java.util.Scanner;
 
public class Compute {
	public static void main (String[] args) {
	  //name integers
	  int data;
	  int sum = 0;
	  double ave = 0;
	  int positive = 0;
	  int negative = 0;
 
 
	//Create Scanner	  
	Scanner input = new Scanner(System.in);
 
	// initial input and continue until 0 is entered
	System.out.print(
	  "Enter an int value (The program exits if the input is 0): ");
	data = input.nextInt();
 
 
	while (data != 0) {
	  sum += data; //add input to running sum
	  if data <=0 { += positive++ //count positive by adding 1 to the count
		else = negative++; //count negative integers
	  }     
	}  
 
	// end result of user input
 
	  ave = ((double)sum) / count;
	  System.out.println ("The number of positives is " + positive);
	  System.out.println ("The number of negatives is " + negative);
	  System.out.println ("The total is " + sum);
	  System.out.println ("The average is " + ave);
 
 
 
   }
}

** I just tried it on my own is this correct?

is this correct?

What happens when you compile and execute the program?
If you get any errors you need help with, copy the full text and paste it here.

If it executes, Does it give you the correct answers?

// Description: Determines positive, negative, sum, and average of integers. Ends when 0 input.

import java.util.Scanner;
 
public class Compute {
	public static void main (String[] args) {
	  //name integers
	  int data;
	  int sum = 0;
	  double ave = 0;
	  int positive = 0;
	  int negative = 0;
	  int count = 0;
 
	//Create Scanner	  
	Scanner input = new Scanner(System.in);
 
	// initial input and continue until 0 is entered
	System.out.print ("Enter an int value (The program exits if the input is 0): ");
	    data = input.nextInt();
 
 
	while (data != 0) {
	  sum += data; //add input to running sum
	  count++;
	  if (data <=0) { positive++; }//count positive by adding 1 to the count
		else {negative++;} //count negative integers   
	  System.out.print ("Enter an int value (The program exits if the input is 0): ");
	    data = input.nextInt();
	} 
 
	// end result of user input
 
	  ave = ((double)sum) / count;
	  System.out.println ("The number of positives is " + positive);
	  System.out.println ("The number of negatives is " + negative);
	  System.out.println ("The total is " + sum);
	  System.out.println ("The average is " + ave);
 
 
 
   }
}

I fixed it one more time but i get an error of "Exception in thread "main" java.lang.Error: Unresolved compilation problem:

at Compute.main(MainClass.java:6)"

Can you just compile the program and not try to execute it so that you get the error messages from the compiler? There is important information in the error messages. They show the source line number and a good description of the error.
Here is a sample:

TestSorts.java:138: cannot find symbol
symbol  : variable var
location: class TestSorts
         var = 2;
         ^

In future posts please wrap your code with
[code=java]
<YOUR CODE HERE>
[/code]
to get highlighting and preserve formatting.

What is there to do in question 2? Print the values of some expressions.