calc.java

package calc;
import java.util.Scanner;

public class Calc {

    public static void main(String[] args) {
        Scanner kevin = new Scanner(System.in);
        System.out.println("Enter first number");
        double fnum = kevin.nextDouble();
        System.out.println("Enter second number");
        double snum = kevin.nextDouble();
        System.out.println("Enter your operation");
        System.out.println("add, sub, mult, div");
        String op = kevin.next();
        kevin.close();
        double ans;
        if(op.equalsIgnoreCase("add")){
            ans = fnum + snum;
            System.out.print("The Answer is ");
            System.out.println(ans);
        }else if(op.equalsIgnoreCase("sub")){
            ans = fnum - snum;
            System.out.print("The Answer is ");
            System.out.println(ans);
        }else if(op.equalsIgnoreCase("mult")){
            ans = fnum * snum;
            System.out.print("The Answer is ");
            System.out.println(ans);
        }else if(op.equalsIgnoreCase("div")){
            ans = fnum / snum;
            System.out.print("The Awnser is ");
            System.out.println(ans);
        }else{
            System.out.println("Invalid Operation.");
            System.out.println("Aborting.");
        }



    }

}