Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

Basic Java Program: Comparing three floating point numbers and printing the smallest number

Posted on 2008-10-21
12
Medium Priority
?
1,426 Views
Last Modified: 2013-11-23
Hello!

I am still attempting to teach myself JAVA. I trying to write a program that prompts for three floating point numbers that have no more than three decimals and compare them. I am then trying to get it to output the smallest number. It seemed like a simple program and it probably is. I am just so new to java. Can anyone see what I am doing wrong?
/**
 * @(#)minimum3.java
 *
 * minimum3 application
 *
 * @author 
 * @version 1.00 2008/10/21
 */
 import java.util.Scanner; 
 
public class minimum3 {
    
    public static void main(String[] args) {
    	
    Scanner input = new Scanner(System.in );
    
    int number1;
    int number2;
    int number3;
    
    
    System.out.print( "Enter first number: ");
    	number1 = input.nextInt();
    	
    System.out.print( "Enter second number: ");
    	number2 = input.nextInt();
    	
    System.out.print( "Enter third number: ");
    	number3 = input.nextInt();
    
    
    if ( number1 < number2 ) && ( number 1 < number3 )
    		System.out.printf( "Smallest number is: %d\n, number1);
    		
    if ( number2 < number3 ) && ( number 2 < number1 )
    		System.out.printf( "Smallest number is: %d\n, number2);
    		
    if ( number3 < number 2) && ( number 3 < number1 )
    		System.out.printf( "Smallest number is: %d\n, number3);
    
 
}

Open in new window

0
Comment
Question by:Joseph Moody
  • 7
  • 4
12 Comments
 
LVL 2

Expert Comment

by:rnevet
ID: 22767494
Well if you copy pasted it.. then you are missing closing  " in your printf calls to start with.
In bold:
System.out.printf( "Smallest number is: %d\n", number2);

0
 
LVL 6

Expert Comment

by:manuel_m
ID: 22767540
You did not closed the System.out.printf.
Should be -> System.out.printf( "Smallest number is: %d\n", number1);
" after \n

The if condition should be:
if (condition) {
   // your code
}

// in your case
// see the additional braces for the condition
if ( ( number1 < number2 ) && ( number 1 < number3 ) ) {
  System.out.printf( "Smallest number is: %d\n", number1);
}

Open in new window

0
 
LVL 22

Author Comment

by:Joseph Moody
ID: 22767550
Thanks! I corrected that. I also saw I didn't have a closing bracket at the end. I am getting an "illegal start of expression" at line 32. Any clue as to why?
0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 
LVL 6

Expert Comment

by:manuel_m
ID: 22767554
You also should capitalize your class name.
minimum3  to Minimum3 (and file name to Minimum3.java)
0
 
LVL 6

Expert Comment

by:manuel_m
ID: 22767588
see code snippet. The closing bracket of your main method is missing.
public class minimum3 {
    
    public static void main(String[] args) {
        // your code
    } // this bracket is missing!
}

Open in new window

0
 
LVL 22

Author Comment

by:Joseph Moody
ID: 22767620
Thanks manuel_m! I made the changes but I am getting ')' expected at line 32 (along with a bunch of other errors).
/**
 * @(#)Minimum3.java
 *
 * Minimum3 application
 *
 * @author 
 * @version 1.00 2008/10/21
 */
 import java.util.Scanner; 
 
public class Minimum3 {
    
    public static void main(String[] args) {
    	
    Scanner input = new Scanner(System.in );
    
    int number1;
    int number2;
    int number3;
    
    
    System.out.print( "Enter first number: ");
    	number1 = input.nextInt();
    	
    System.out.print( "Enter second number: ");
    	number2 = input.nextInt();
    	
    System.out.print( "Enter third number: ");
    	number3 = input.nextInt();
    
    
  if ( ( number1 < number2 ) && ( number 1 < number3 ) ) 	
{
  System.out.printf( "Smallest number is: %d\n", number1);
}
 
  if ( ( number2 < number1 ) && ( number 2 < number3 ) ) 
{
  System.out.printf( "Smallest number is: %d\n", number2);
}
 
if ( ( number3 < number2 ) && ( number 3 < number1 ) ) 
{
  System.out.printf( "Smallest number is: %d\n", number3);
}
 
    
    }
}

Open in new window

0
 
LVL 6

Expert Comment

by:manuel_m
ID: 22767643
You have the three variables
number1
number2
number3
In your if condition you are trying to check number 1 and number 2 with a blank.
Variables, methods, etc. do not have any blanks in their names!
0
 
LVL 22

Author Comment

by:Joseph Moody
ID: 22767685
Ok. That makes sense. How do I fix that though?
0
 
LVL 6

Expert Comment

by:manuel_m
ID: 22767715
Just remove the blanks from the variable names in line 32, 37 and 42.

// line 32: replaced "number 1" with "number1"
if ( (number1 < number2) && (number1 < number3) ) {
// etc...

Open in new window

0
 
LVL 6

Accepted Solution

by:
manuel_m earned 2000 total points
ID: 22767719
If you still want to check for floating point numbers you have to change the type of your 3 number variables to float.
float number1;
...

And getting the float from the input you have to take the method  input.nextFloat();

You also should think about an exception handling, if the user types not a float number (i.e. abc instead of 1.234).
Here you get more information: http://java.sun.com/docs/books/tutorial/essential/exceptions/
0
 
LVL 22

Author Closing Comment

by:Joseph Moody
ID: 31508293
Thank you so much for all of the help! I did not even see that I had those spaces!
0
 
LVL 6

Expert Comment

by:manuel_m
ID: 22767883
You're welcome :-)
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

For beginner Java programmers or at least those new to the Eclipse IDE, the following tutorial will show some (four) ways in which you can import your Java projects to your Eclipse workbench. Introduction While learning Java can be done with…
Basic understanding on "OO- Object Orientation" is needed for designing a logical solution to solve a problem. Basic OOAD is a prerequisite for a coder to ensure that they follow the basic design of OO. This would help developers to understand the b…
Viewers learn about the “for” loop and how it works in Java. By comparing it to the while loop learned before, viewers can make the transition easily. You will learn about the formatting of the for loop as we write a program that prints even numbers…
Viewers will learn about basic arrays, how to declare them, and how to use them. Introduction and definition: Declare an array and cover the syntax of declaring them: Initialize every index in the created array: Example/Features of a basic arr…
Suggested Courses
Course of the Month15 days, 11 hours left to enroll

580 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question