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Calculations using user input numbers

Calculations using user input numbers, Calculations using different data types

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jlgraham	25 Jun, 2008 - 08:18 PM Post #1
New D.I.C Head Joined: 24 Jul, 2007 Posts: 5 My Contributions	I have an assignment that wants me to write an application that takes 5 numbers from a user. As the user inputs the numbers I have to make them into a double, float, long, int and byte. All I need after this is to output the result of the following calculation. Subtract the floatValue from the intValue, then multiply by the doubleValue, then divide by the longValue, then multiply by the byteValue and then divide by 2. I am to store the result in an int variable. I can get the user input but am at a loss as to how to do the calculation and store the result. Can someone out in cyberworld help. Thanks to anyone who responds. CODE import java.util.*; public class TestNumbers { public static void main(String args[]) { Scanner input = new Scanner(System.in); int result; System.out.println("Enter a number:"); double num1 = input.nextDouble(); System.out.println(); System.out.println("Enter second number:"); float num2 = input.nextFloat(); System.out.println(); System.out.println("Enter third number:"); long num3 = input.nextLong(); System.out.println(); System.out.println("Enter fourth number:"); int num4 = input.nextInt(); System.out.println(); System.out.println("Enter fifth number:"); byte num5 = input.nextByte(); System.out.println(); } }
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pbl

RE: Calculations Using User Input Numbers
25 Jun, 2008 - 08:35 PM

Post #2

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java


import java.util.*;


public class TestNumbers
{
    public static void main(String args[])
    {

        Scanner input = new Scanner(System.in);


        System.out.println("Enter a number:");
        double num1 = input.nextDouble();


        System.out.println();
        System.out.println("Enter second number:");
        float num2 = input.nextFloat();


        System.out.println();
        System.out.println("Enter third number:");
        long num3 = input.nextLong();


        System.out.println();
        System.out.println("Enter fourth number:");
        int num4 = input.nextInt();


        System.out.println();
        System.out.println("Enter fifth number:");
        byte num5 = input.nextByte();

        // Subtract the floatValue from the intValue,
        double result = num3 - num2;
        // then multiply by the doubleValue
        result *= num1;
        // then divide by the longValue
        result /= num3;
        //then multiply by the byteValue 
        result *= num5;
        // then divide by 2. 
        result /= 2.0;
        System.out.println("Result is: " + result);

    }

}

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jlgraham	RE: Calculations Using User Input Numbers 26 Jun, 2008 - 06:32 AM Post #3
New D.I.C Head Joined: 24 Jul, 2007 Posts: 5 My Contributions	Thanks for your help and I understand the reasoning but it still won't work. I have to store the result in an int variable and I get the error result already define in main double result = num3-num2; I don't understand how to get the results to an int unless I can explicitly make it but how. More help please.
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rgfirefly24	RE: Calculations Using User Input Numbers 26 Jun, 2008 - 08:09 AM Post #4
D.I.C Regular Joined: 7 Apr, 2008 Posts: 335 Thanked: 5 times Dream Kudos: 150 My Contributions	QUOTE(jlgraham @ 26 Jun, 2008 - 07:32 AM) Thanks for your help and I understand the reasoning but it still won't work. I have to store the result in an int variable and I get the error result already define in main double result = num3-num2; I don't understand how to get the results to an int unless I can explicitly make it but how. More help please. ok first off, dont make a new post. Second try casting it to an int java int finalresult = Integer.parseInt(result);
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