Calculator.java

package calculator;

import java.util.Scanner;


public class Calculator {

    
    public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    double num1 , num2 ;
    char c;
        System.out.println("Enter fisrt number:" );
        num1=scan.nextDouble();
        System.out.println("Enter second number:");
        num2=scan.nextDouble();
        System.out.println("Enter operation:");
        c=scan.next().charAt(0);
        System.out.println("The result of operation:"+sum(num1,num2,c));
    }
    public static double sum(double num1 , double num2 , char c){
        double result = 0;
        switch(c){
            case'+':result=num1+num2;
            break;
            case'-':result=num1-num2;
            break;
            case'*':result=num1*num2;
            break;
            case'/':result=num1/num2;
            break;
            
        }
        return result;
    }
    
}