SimpleCalculator

package simplecalculator; import java.util.Scanner; /** * * @author anfal */ public class SimpleCalculator { public static void main(String[] args) { Scanner input = new Scanner(System.in); //1.prompt user to input calculation System.out.print("Please input a calculation in the form \"x operation y\": "); //2.read num1, operation, num2. int num1 = input.nextInt(); char operation = input.next().charAt(0); int num2 = input.nextInt(); //3.declare and initialize result double result = 0; //4.if operation = *, /, +, - if (operation == '*') { result = num1 * num2; } if (operation == '/') { result = num1 / num2; } if (operation == '+') { result = num1 + num2; } if (operation == '-') { result = num1 - num2; } else { System.out.println("Invalid input."); System.exit(0); } //print result System.out.println(num1 + " " + operation + " " + num2 + " = " + result); } }