Question

Implement a hand held calculator. calculator that models are It should have following functions:
1.addition
2. Subtraction
3.Multiplication
4.Division
5.Remainder
Now use switch -case statement for two numbers to design a to a calculator any​

Answer 1

Answer:

import java.util.Scanner;

public class calc

{

public static void main(String[] args)

{

int choice;

Scanner sc=new Scanner(System.in);

System.out.print("Enter 1 for addition .\nEnter 2 for subtraction.\n Enter 3 for multiplication.\nEnter 4 for division. ")

choice=sc.nextInt();

switch(choice)

{

case 1:

      System.out.println("ADDITION");

        System.out.print("ENTER A NUMBER: ")

       double a=sc.nextDouble();

       System.out.print("ENTER A NUMBER: ")

       double b=sc.nextDouble();

       double sum=a+b;

        System.out.println("Sum is :"+sum);

case 2:

      System.out.println("SUBTRACTION");

       System.out.print("ENTER A NUMBER: ")

       double x=sc.nextDouble();

       System.out.print("ENTER A NUMBER: ")

       double y=sc.nextDouble();

       double diff=x-y;

       System.out.println("Difference is :"+diff);  

case 3:

      System.out.println("MULTIPLICATION");

       System.out.print("ENTER A NUMBER: ")

       double p=sc.nextDouble();

       System.out.print("ENTER A NUMBER: ")

       double q=sc.nextDouble();

       double mult=p*q;

        System.out.println("Product is :"+mult);

case 4:

      System.out.println("DIVISION");

       System.out.print("ENTER A NUMBER: ")

       double c=sc.nextDouble();

       System.out.print("ENTER A NUMBER: ")

       double d=sc.nextDouble();

       double quotient=c/d;

        System.out.println("Quotient  is :"+quotient);      

case 5:

      System.out.println("REMAINDER");

       System.out.print("ENTER A NUMBER: ")

       double e=sc.nextDouble();

       System.out.print("ENTER A NUMBER: ")

       double f=sc.nextDouble();

       double rem=e%f;

        System.out.println("Remainder  is :"+rem);  

}

}

}

Explanation: