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Thread: Finding square root

  1. #1
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    Default Finding square root

    anyone know how to make a program that will ask the user to enter a number and also a choice (1 for square or 2 for cube). It will then output the result? This is all I got so far and am lost:
    public static void main(String[] args) {
    		new Scanner(System.in);  
     
    		Scanner input = new Scanner(System.in);
    		float square;
     
    		System.out.println("Enter a number.");
    		System.out.println("Select 1 for square or 2 for cube: ");
    		square = input.nextFloat();
     
    		if(square>= 2)
    	{
    			System.out.println(square*2);
    		}
    	else 		{
    			System.out.println(square + " 	
    		}
     
     
    	}
    Last edited by helloworld922; October 18th, 2010 at 07:45 PM.


  2. #2
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    Default Re: Finding square root

    I have put some questions in your code. Answer those for me and I can help you from there. Who knows, maybe answer those questions will clear some things up for you while you answer them.

    Also, please put your code in java tags. Read my signature to figure out how.

    Here is the commented code, please answer these questions for me and we can proceed from there:
    public static void main(String[] args) 
    {
    	//This is a variable that you immediately garbage collecting
    	new Scanner(System.in);
     
    	//Why do you have the previous line if you have this?
    	Scanner input = new Scanner(System.in);
    	//Why a float?
    	float square;
     
    	System.out.println("Enter a number.");
    	//Where do you get the number the user enters?
    	System.out.println("Select 1 for square or 2 for cube: ");
    	//Is this supposed to be 1 or 2 or the number the user entered?
    	square = input.nextFloat();
     
    	//Why greater than or equal to 2?
    	if(square>= 2)
    	{
    		//Why multiply by 2?
    		System.out.println(square*2);
    	}
    	else 
    	{
    		//Why didn't you finish this line of code?
    		System.out.println(square + "
    	}
    }
    NOTE TO NEW PEOPLE LOOKING FOR HELP ON FORUM:

    When asking for help, please follow these guidelines to receive better and more prompt help:
    1. Put your code in Java Tags. To do this, put [highlight=java] before your code and [/highlight] after your code.
    2. Give full details of errors and provide us with as much information about the situation as possible.
    3. Give us an example of what the output should look like when done correctly.

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