Question

赋值是“编写一个Java程序来提示并输入三个数字。输出最大两个数字的总和。输出最大和最小数字的差值。输出最小两个数字的乘积。”< / p>

我已经编写了代码，但它没有正确计算。我已将我的代码包含在下面，所以请随时根据需要进行审查和批评。

import java.util.Scanner;

public class Homework4a {
    public static void main (String[] args) {

        //Declare Scanner object and three numbers (ints) and ints for smallest and largest numbers
        Scanner keyboard;
        int firstUsernumber;
        int secondUsernumber;
        int thirdUsernumber;
        int largestnumber;
        int smallestnumber;
        int largestnumber2;
        int smallestnumber2;
        int largestnumber3;
        int smallestnumber3;

        //Instantiate keyboard
        keyboard = new Scanner(System.in);

        //Prompt the user for input
        System.out.print("Enter your first number here: ");

        //Obtain and store first number
        firstUsernumber = keyboard.nextInt();

        //Prompt the user for second input
        System.out.print("Enter your second number here: ");

        //Obtain and store the second input
        secondUsernumber = keyboard.nextInt();

        //Prompt the user for third input
        System.out.print("Enter your third number here: ");

        //Obtain and store the second input
        thirdUsernumber = keyboard.nextInt();

        //Determine largest number
        if (firstUsernumber > secondUsernumber) {
            largestnumber = firstUsernumber;
            smallestnumber = secondUsernumber;
        } else {
            largestnumber = secondUsernumber;
            smallestnumber = firstUsernumber;}
        if (secondUsernumber > thirdUsernumber) {
            largestnumber2 = secondUsernumber;
            smallestnumber2 = thirdUsernumber;
        } else {
            largestnumber2 = thirdUsernumber;
            smallestnumber2 = secondUsernumber;}
        if (firstUsernumber > thirdUsernumber) {
            largestnumber3 = firstUsernumber;
            smallestnumber3 = thirdUsernumber;
        } else {
            largestnumber3 = thirdUsernumber;
            smallestnumber3 = firstUsernumber;

        }//Ending bracket of if statement

        //Calculate sum of largest numbers
        System.out.println("The sum of the largest numbers is: " + (largestnumber + largestnumber2));

        //Calculate the difference of the largest and smallest number
        System.out.println("The difference of the largest number and smallest number is: " + (largestnumber - smallestnumber));

        //Calculate the product of the smallest numbers
        System.out.println("The product of the smallest numbers is: " + (smallestnumber*smallestnumber3));

    }//Ending bracket method main

}//Ending bracket class Homework4a

Answer 1

import java.util.Scanner;

//this program takes three integers from the user and outputs the sum of the largest two numbers, the difference of the largest and smallest number, and the product of the smallest two numbers.
// done by Nadim Baraky
public class OperationsOnNumbers {


    public static void main(String[] args) {

     //declare three integer variables
     int firstMax, secondMax, min;

     //firstMax: largest number; secondMax: the number in between; min: the smallest number.

     Scanner input = new Scanner(System.in);

     System.out.print("Enter your first number: ");
     int firstNumber = input.nextInt();

     System.out.print("Enter your second number: ");
     int secondNumber = input.nextInt();

     System.out.print("Enter your third number: ");
     int thirdNumber = input.nextInt();

     input.close();


     firstMax = Math.max(Math.max(firstNumber, secondNumber),thirdNumber);

     if(firstMax == firstNumber) {
            secondMax = Math.max(secondNumber, thirdNumber);
     } 

     else if(firstMax == secondNumber) {
            secondMax = Math.max(firstNumber, thirdNumber);
     }

     else {
            secondMax =  Math.max(firstNumber, secondNumber);
     }

     min = Math.min(Math.min(firstNumber, secondNumber), thirdNumber);      

     System.out.println("The sum of the largest two numbers is: " + (firstMax + secondMax));
     System.out.println("The difference of the largest and smallest numbers is: " + (firstMax - min));
     System.out.println("The product of the smallest two numbers: " + secondMax * min);

    }

}

提示和输入数字并计算总和，差异和产品

1 个答案: