Question

JAVA I need a switch so that users can input one selection then another. These selections are for a simple calculator that uses random numbers 1. + 2. - 3. * 4./ 5. RNG. This has to be simple this is a beginners class. Here is what I have

import java.util.Scanner;
import java.util.Random;
import java.util.*;

public class You_Michael02Basic_Calculator {

   public static void main(String[] args) {
       // Generate random numbers
       int num1,num2;
       num1 =(int)(Math.random()*100+1);
       num2 =(int) (Math.random()*100+1);
      
      
       // Ask for user input

      
       Scanner in = new Scanner(System.in);
      
      
       System.out.println("Welcome to the RNG Calculator");
       System.out.println("Please enter your selection ::");
       System.out.println("1.) Addition");
       System.out.println("2.) Subtraction");
       System.out.println("3.) Multiply");
       System.out.println("4.) Division");
       System.out.println("5.) Generate random numbers");
       int result ;
       int selection = in.nextInt();
     
       if (selection == 5)
           System.out.println("Your numbers are"+num1+num2);
       System.out.println("Your operator choice ?");
       int selection = in.nextInt();
      
      
      
       switch (selection)
       {
      
       case'1': result = num1+num2;
       break;
       case '2' :result = num1 - num2;
       break;
       case'3' :result = num1 /num2 ;
       break;
       case '4': result = num1*num2;
       break;
       case '5':
           default : JOptionpane.showMessageDialog(null,"Something went wrong");
      
       }

   }

}

Answer 1

I'm doing this program in my laptop ....I'm submitted code screenshot and written code in my notes.

You Michael02Basic Calculator.java - Notepad File Edit Format View Help import java.util. Scanner; import java.util. Random; import java.util.*; public class You_Michael02Basic_Calculator { public static void main(String[] args) { // Generate random numbers int num1, num2; num1 (int) (Math.random()**100+1); num2 (int) (Math.random() *100+1); System.out.println("the two numbers are "+num1+"\t "+num2+"\n"); //Ask for user input Scanner in =new Scanner (System. in); System.out.println( "We L come to the RNG Calculator"); System.out.println( "Please enter your selection ::"); System.out.println( "1.) Addition"); System.out.println("2.) Subtraction "); System.out.println( "3.) Multiply"); System.out.println( "4.) Division "); System.out.println( "5.) Generate random numbers"); int result; System.out.println( "Your operator choi ce?"); int selection = in.nextInt ();

You Michael02Basic Calculator.java Notepad File Edit Format View Help int selection = in.next Int () ; switch (selection) case 1:result= num1+num2; System.out.println( "Addition \t"+result); break case 2:result = num1 - num2; System.out.println("Subtraction \t"+result); break case 3:Fesult= num1*num2 System.out.println( "Multiplication \t"+resul t); break; case 4:result = num1/num2; System.out.println( "Division \t"+resul t); break case 5 System.out.println("Your numbers are \t"+num1+"\t"+num2); break default System.out.println( "some thing went wrong"); break; }

Command Prompt c:AUsers COOLNDesktop>javac You_Mic hae 102 Bas ic_Calculator.java CENUsers C00LNDesktop>java You_Michae 102 Basic_Calculator the two numbers are 76 83 We lcometo the RNG Calculator Please enter your selection: .> Addition 2. Subtraction 3.> Multiply 4. Division 5. Generate random numbers Your operator cho ice? Addition 159 CENUsersCOOL Desktop>javac You_Michae102 Bas ic_Calculator.java C:NUserscoOLNDesktop>java You_Michae102 Basic_Calculator thetwo numbers are 86 27 Welcome to the RNG Calculator Please enter your selection :: 1. Addition 2.> Subtraction 3. Multiply 4.) Division 5. Generate random numbers Your operator cho ice? Multiplication 2322 CENUsersCOOL Desktop>javac You_Michae102 Bas ic_Calculator.java CENUsers C00LNDesktop>java You_Michae 102 Basic_Calculator thetwo numbers are 69 92 Welcome to the RNG CalculatOr Please enter your selection: 1.> Addition 2. Subtraction 3. Multiply 4.) Division 5. Generate random numbers Your operator cho ice ? 6 something went wrong C:NUsersCOOL Desktop>

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