Machine Problem
Write a Java program that will use the MDAS Operation to * calculate integers. "Use switch Statement" using Java programming language.
Sample Program Output
Operator (+,-,*,/)
Choose Operator : +
Enter First Number: 10
Enter Second Number: 1
10 + 1 = 11
Operator (+,-,*,/)
Choose Operator : -
Enter First Number: 10
Enter Second Number: 1
10 - 1 = 9
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Program Listing
package test;
import java.util.Scanner;
/*
* Calculator.java
*
* Jake Rodriguez Pomperada, MAED-IT, MIT
* www.jakerpomperada.com and www.jakerpomperada.blogspot.com
* jakerpomperada@gmail.com
* Bacolod City, Negros Occidental Philippines
*
* Machine Problem
*
* Write a Java program that will use the MDAS Operation to
* calculate integers. "Use switch Statement"
*
* Sample Program Output
*
* Operator (+,-,*,/)
* Choose Operator : +
* Enter First Number: 10
* Enter Second Number: 1
* 10 + 1 = 11
*
* Operator (+,-,*,/)
* Choose Operator : -
* Enter First Number: 10
* Enter Second Number: 1
* 10 - 1 = 9
*/
public class Calculator {
public static void main(String[] args) {
char operator;
int number1, number2, result;
// create an object of Scanner class
Scanner input = new Scanner(System.in);
// ask users to enter operator
System.out.println();
System.out.println("+,=,*,/");
System.out.print("Choose Operator : ");
operator = input.next().charAt(0);
// ask users to enter numbers
System.out.print("Enter First Number : ");
number1 = input.nextInt();
System.out.print("Enter Second Number : ");
number2 = input.nextInt();
switch (operator) {
// performs addition between numbers
case '+':
result = number1 + number2;
System.out.println(number1 + " + " + number2 + " = " + result);
break;
// performs subtraction between numbers
case '-':
result = number1 - number2;
System.out.println(number1 + " - " + number2 + " = " + result);
break;
// performs multiplication between numbers
case '*':
result = number1 * number2;
System.out.println(number1 + " * " + number2 + " = " + result);
break;
// performs division between numbers
case '/':
result = number1 / number2;
System.out.println(number1 + " / " + number2 + " = " + result);
break;
default:
System.out.println("Invalid operator!");
break;
}
input.close();
}
}
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