coelhinhos2

import java.util.Scanner;
import java.math.BigInteger;

public class Main
{
    public static void main(String[] coelhinhos)
    {
        Exercicios e = new Exercicios();
        e.ex4();
    }
}

class Exercicios
{
    void ex1()
    {
        int var = 5;
        while(var < 69)
        {
            BigInteger fat = new BigInteger("1");
            for(int i = 2; i <= var; i++)
            {
                fat = fat.multiply(BigInteger.valueOf(i));
            }
            System.out.println("Fatorial de " + var + " eh " + fat.abs());
            switch(var)
            {
                case 5:  var = 12; break;
                case 12: var = 49; break;
                case 49: var = 69; break;
            }
        }
    }

    void ex2()
    {
        /* a execucao termina quando receber um 0 */
        int cont = 0; // quantidade de numeros lidos
        Scanner t = new Scanner(System.in);
        float var = t.nextFloat();
        float media = var;
        if (var != 0) cont++;

        while (var != 0)
        {
            var = t.nextFloat();
            if (var != 0)
            {
                media += var;
                cont++;
            }
        }

        media /= cont;

        System.out.println("A media dos " + cont + " numeros eh " + media);
    }

    void ex3()
    {

    }

    void ex4()
    {
        Scanner t = new Scanner(System.in);
        float a = t.nextFloat();
        float b = t.nextFloat();
        String op = t.nextLine();
        float res = -1;
        boolean flag = false;

        switch(op.charAt(0))
        {
            case '+': res = a+b; flag = true; break;
            case '-': res = a-b; flag = true; break;
            case '*': res = a*b; flag = true; break;
            case '/': res = a/b; flag = true; break;
            default: System.out.println("nope");
        }

        if(flag)
        {
            System.out.println(a + op + b + " = " + " " + res);
        }
    }
}