Question

Write a Program to make a simple calculator to perform +,-,*,/ using switch case in java



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Answer 1

import java.util.Scanner;

public class JavaExample {

public static void main(String[] args) {

double num1, num2;

Scanner scanner = new Scanner(System.in);

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

num1 = scanner.nextDouble();

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

num2 = scanner.nextDouble();

System.out.print("Enter an operator (+, -,*, /):");

char operator = scanner.next().charAt(0);

scanner.close();

double output;

switch(operator)

{

case '+':

output = num1 + num2;

break;

case '-':

output = num1 - num2;

break;

case '*':

output = num1 * num2;

break;

case '/':

output = num1 / num2;

break;

default:

System.out.printf("You have entered wrong operator");

return;

}

System.out.println(num1+" "+operator+" "+num2+": "+output);

}

}