Question

Please solve in java

Write a program that serves as a simple calculator. The program should ask the user for a number, an operator, and then a second number. The operator should be either '+', '-', 'x', or '/'. The program should then report the answer to the problem. Use a switch statement, not an if statement. You'll need to read the operator as a String and compare it using Strings, as you did in 4.1.

Turn in your source code and your output. A single output is sufficient.

Answer 1

If you have any doubts, please give me comment...

import java.util.Scanner;

public class SimpleCalculator{

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

System.out.print("Enter first number: ");

int n1 = in.nextInt();

System.out.print("Enter an operator: ");

String op = in.next();

System.out.print("Enter second number: ");

int n2 = in.nextInt();

switch(op){

case "+":

System.out.println("Addition of "+n1+" and "+n2+" = "+(n1+n2));

break;

case "-":

System.out.println("Subtraction of "+n1+" and "+n2+" = "+(n1-n2));

break;

case "x":

System.out.println("Multiplication of "+n1+" and "+n2+" = "+(n1*n2));

break;

case "/":

System.out.println("Division of "+n1+" and "+n2+" = "+(n1/n2));

break;

default:

System.out.println("Invalid operator!");

}

}

}