package jp;

import java.util.Scanner;

public class Calculator {

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

System.out.println("dozwolone operacje (+)(-)(*)(/)(%)(^)");

double var1 = scanner.nextDouble();

scanner.nextLine();

char key = scanner.nextLine().charAt(0);

double var2 = scanner.nextDouble();

switch(key){

case '+':

System.out.printf("%f %c %f = %.2f",var1,key,var2,var1 + var2);

break;

case '-':

System.out.printf("%f %c %f = %.2f",var1,key,var2,var1 - var2);

break;

case '*':

System.out.printf("%f %c %f = %.2f",var1,key,var2,var1 * var2);

break;

case '/':

System.out.printf("%f %c %f = %.2f",var1,key,var2,var1 / var2);

break;

case '%':

System.out.printf("%f %c %f = %.2f",var1,key,var2,var1 % var2);

break;

case '^':

System.out.printf("%f %c %f = %.2f",var1,key,var2,Math.pow(var1 , var2));

break;

}

scanner.close();

}}