import java.io.IOException;
import java.util.Scanner;

public class SwitchCalc {

	   static int  resultOfOperation (int firstDigit,int secondDigit, String operation) {
		int result = 0;
	switch (operation){
		case "+":
				result = firstDigit + secondDigit;
				break;
		case "-":
				result = firstDigit - secondDigit;
				break;
		case "*":
				result = firstDigit * secondDigit;
				break;
		case "/":
				if (secondDigit==0)
					result = 0;
				else
				result = firstDigit / secondDigit;
				break;
		default:
				System.out.println("Wrong operation");
		}
		return result;
	   }
		static double  resultOfOperation (double firstDigit,double secondDigit, String operation) {
			double result = 0;
		switch (operation){
			case "+":
					result = firstDigit + secondDigit;
					break;
			case "-":
					result = firstDigit - secondDigit;
					break;
			case "*":
					result = firstDigit * secondDigit;
					break;
			case "/":
					if (secondDigit==0)
						result = 0;
					else
					result = firstDigit / secondDigit;
					break;
			default:
					System.out.println("Wrong operation");
			}
			return result;
	}
	public static void main(String[] args) throws IOException  {
		double sum;
		Scanner reader = new Scanner(System.in);
		System.out.println("Entering value: ");
		System.out.print("Enter the first value: ");
		String str = reader.nextLine();
		String strParse1 = str.replace(',', '.');
		double inputNum1 = Double.parseDouble(strParse1);
		System.out.print("Enter the second value: ");
		String str3 = reader.nextLine();
		String strParse2 = str3.replace(',', '.');
		double inputNum2 = Double.parseDouble(strParse2);
		System.out.println("Result: ");
		System.out.println("A comma in the first value is in position: " + str.indexOf(','));
		System.out.println("A comma in the second value is in position: " + str3.indexOf(','));

		sum = SwitchCalc.resultOfOperation (inputNum1,inputNum2, "+");
		System.out.println(strParse1 + " + " + strParse2 + " = " + sum);
	}
}